New nng version of Getting Started.
While here we fixed a few problems with the old version
(mostly compile lines that were botched.)
diff --git a/_adoc/gettingstarted/banner.adoc b/_adoc/gettingstarted/banner.adoc
index 6e612f4..2907e11 100644
--- a/_adoc/gettingstarted/banner.adoc
+++ b/_adoc/gettingstarted/banner.adoc
@@ -4,3 +4,6 @@
That post is no longer available, but we have modified and restructured it,
as well as making enhancments and corrections.
Tim's original code is on https://github.com/dysinger/nanomsg-examples[github], but we recommend using the examples here as they have a number of corrections.
+
+TIP: If you want to use the experimental https://github.com/nanomsg/nng[nng]
+library instead, see the document <<nng/index#,Getting Started with 'nng'>>.
diff --git a/_adoc/gettingstarted/bus.adoc b/_adoc/gettingstarted/bus.adoc
index 0ab43d8..123a398 100644
--- a/_adoc/gettingstarted/bus.adoc
+++ b/_adoc/gettingstarted/bus.adoc
@@ -24,7 +24,7 @@
.Compilation
[source,bash]
----
-gcc bus.c -lnanomsg.a -o bus
+gcc bus.c -lnanomsg -o bus
----
.Execution
diff --git a/_adoc/gettingstarted/nng/banner.adoc b/_adoc/gettingstarted/nng/banner.adoc
new file mode 100644
index 0000000..22d1a7c
--- /dev/null
+++ b/_adoc/gettingstarted/nng/banner.adoc
@@ -0,0 +1,6 @@
+= <<index#,Getting Started with 'nng'>>
+
+NOTE: This document is derived from an original post by Tim Dysinger.
+However, the examples here are for https://github.com/nanomsg/nng[nng]
+instead of https://github.com/nanomsg/nanomsg[nanomsg]. For the legacy
+nanomsg version of this, see <<../index#,Getting Started with 'nanomsg'>>.
diff --git a/_adoc/gettingstarted/nng/bus.adoc b/_adoc/gettingstarted/nng/bus.adoc
new file mode 100644
index 0000000..cdfc19f
--- /dev/null
+++ b/_adoc/gettingstarted/nng/bus.adoc
@@ -0,0 +1,39 @@
+---
+layout: default
+---
+:source-highlighter: coderay
+:icons: font
+
+include::banner.adoc[]
+
+== Bus (Routing)
+
+image::../bus.png[A Simple Bus]
+
+The bus protocol is useful for routing applications, or for building
+fully interconnected mesh networks. In this pattern, messages are
+sent to every directly connected peer.
+
+.bus.c
+[source,c]
+----
+include::src/bus.c[]
+----
+<1> Blithely assumes message is ASCIIZ string. Real code should check it.
+
+.Compilation
+[source,bash]
+----
+gcc bus.c -lnng -o bus
+----
+
+.Execution
+[source,bash]
+----
+include::src/bus.sh[]
+----
+
+.Output
+----
+include::src/bus.out[]
+----
diff --git a/_adoc/gettingstarted/nng/index.adoc b/_adoc/gettingstarted/nng/index.adoc
new file mode 100644
index 0000000..9a409ad
--- /dev/null
+++ b/_adoc/gettingstarted/nng/index.adoc
@@ -0,0 +1,22 @@
+---
+layout: default
+---
+:source-highlighter: coderay
+:icons: font
+
+include::banner.adoc[]
+
+== Messaging Patterns
+
+http://nanomsg.github.io/nng[nng] is a messaging framework that attempts to
+help solve common messaging problems with one of a few patterns ('protocols'
+in nng parlance.)
+
+Following are examples of each pattern type in C.
+
+* <<pipeline#,Pipeline (A One-Way Pipe)>>
+* <<reqrep#,Request/Reply (I ask, you answer)>>
+* <<pair#,Pair (Two Way Radio)>>
+* <<pubsub#,Pub/Sub (Topics & Broadcast)>>
+* <<survey#,Survey (Everybody Votes)>>
+* <<bus#,Bus (Routing)>>
diff --git a/_adoc/gettingstarted/nng/pair.adoc b/_adoc/gettingstarted/nng/pair.adoc
new file mode 100644
index 0000000..844780a
--- /dev/null
+++ b/_adoc/gettingstarted/nng/pair.adoc
@@ -0,0 +1,39 @@
+---
+layout: default
+---
+:source-highlighter: coderay
+:icons: font
+
+include::banner.adoc[]
+
+== Pair (Two Way Radio)
+
+image::../pair.png[Two Way Radio]
+
+The pair pattern is used when there a one-to-one peer relationship.
+Only one peer may be connected to another peer at a time, but both
+may speak freely.
+
+.pair.c
+[source,c]
+----
+include::src/pair.c[]
+----
+<1> Blithely assumes message is ASCIIZ string. Real code should check it.
+
+.Compilation
+[source,bash]
+----
+gcc pair.c -lnng -o pair
+----
+
+.Execution
+[source,bash]
+----
+include::src/pair.sh[]
+----
+
+.Output
+----
+include::src/pair.out[]
+----
diff --git a/_adoc/gettingstarted/nng/pipeline.adoc b/_adoc/gettingstarted/nng/pipeline.adoc
new file mode 100644
index 0000000..8b28272
--- /dev/null
+++ b/_adoc/gettingstarted/nng/pipeline.adoc
@@ -0,0 +1,39 @@
+---
+layout: default
+---
+:source-highlighter: coderay
+:icons: font
+
+include::banner.adoc[]
+
+== Pipeline (A One-Way Pipe)
+
+image::../pipeline.png[A One-Way Pipe]
+
+This pattern is useful for solving producer/consumer problems, including
+load-balancing. Messages flow from the push side to the pull side. If
+multiple peers are connected, the pattern attempts to distribute fairly.
+
+.pipeline.c
+[source,C]
+----
+include::src/pipeline.c[]
+----
+<1> Blithely assumes message is ASCIIZ string. Real code should check it.
+
+.Compilation
+[source,bash]
+----
+gcc pipeline.c -lnng -o pipeline
+----
+
+.Execution
+[source,bash]
+----
+include::src/pipeline.sh[]
+----
+
+.Output
+----
+include::src/pipeline.out[]
+----
diff --git a/_adoc/gettingstarted/nng/pubsub.adoc b/_adoc/gettingstarted/nng/pubsub.adoc
new file mode 100644
index 0000000..4532707
--- /dev/null
+++ b/_adoc/gettingstarted/nng/pubsub.adoc
@@ -0,0 +1,38 @@
+---
+layout: default
+---
+:source-highlighter: coderay
+:icons: font
+
+include::banner.adoc[]
+
+== Pub/Sub (Topics & Broadcast)
+
+image::../pubsub.png[Topics & Broadcast]
+
+This pattern is used to allow a single broadcaster to publish messages
+to many subscribers, which may choose to limit which messages they receive.
+
+.pubsub.c
+[source,c]
+----
+include::src/pubsub.c[]
+----
+<1> Blithely assumes message is ASCIIZ string. Real code should check it.
+
+.Compilation
+[source,bash]
+----
+gcc pubsub.c -lnng -o pubsub
+----
+
+.Execution
+[source,bash]
+----
+include::src/pubsub.sh[]
+----
+
+.Output
+----
+include::src/pubsub.out[]
+----
diff --git a/_adoc/gettingstarted/nng/reqrep.adoc b/_adoc/gettingstarted/nng/reqrep.adoc
new file mode 100644
index 0000000..ec6ea65
--- /dev/null
+++ b/_adoc/gettingstarted/nng/reqrep.adoc
@@ -0,0 +1,41 @@
+---
+layout: default
+---
+:source-highlighter: coderay
+:icons: font
+
+include::banner.adoc[]
+
+== Request/Reply (I ask, you answer)
+
+image::../reqrep.png[I ask, you answer]
+
+Request/Reply is used for synchronous communications where each question
+is responded with a single answer, for example remote procedure calls (RPCs).
+Like <<pipeline#,Pipeline>>, it also can perform load-balancing. This
+is the only reliable messaging pattern in the suite, as it automatically
+will retry if a request is not matched with a response.
+
+.reqprep.c
+[source,c]
+----
+include::src/reqrep.c[]
+----
+<1> Blithely assumes message is ASCIIZ string. Real code should check it.
+
+.Compilation
+[source,bash]
+----
+gcc reqrep.c -lnng -o reqrep
+----
+
+.Execution
+[source,bash]
+----
+include::src/reqrep.sh[]
+----
+
+.Output
+----
+include::src/reqrep.out[]
+----
diff --git a/_adoc/gettingstarted/nng/src/bus.c b/_adoc/gettingstarted/nng/src/bus.c
new file mode 100644
index 0000000..97cd84d
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/bus.c
@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <nng/nng.h>
+#include <nng/protocol/bus0/bus.h>
+
+void
+fatal(const char *func, int rv)
+{
+ fprintf(stderr, "%s: %s\n", func, nng_strerror(rv));
+ exit(1);
+}
+
+int
+node(int argc, char **argv)
+{
+ nng_socket sock;
+ int rv;
+ size_t sz;
+
+ if ((rv = nng_bus0_open(&sock)) != 0) {
+ fatal("nng_bus0_open", rv);
+ }
+ if ((rv = nng_listen(sock, argv[2], NULL, 0)) != 0) {
+ fatal("nng_listen", rv);
+ }
+
+ sleep(1); // wait for peers to bind
+ if (argc >= 3) {
+ for (int x = 3; x < argc; x++) {
+ if ((rv = nng_dial(sock, argv[x], NULL, 0)) != 0) {
+ fatal("nng_dial", rv);
+ }
+ }
+ }
+
+ sleep(1); // wait for connects to establish
+
+ // SEND
+ sz = strlen(argv[1]) + 1; // '\0' too
+ printf("%s: SENDING '%s' ONTO BUS\n", argv[1], argv[1]);
+ if ((rv = nng_send(sock, argv[1], sz, 0)) != 0) {
+ fatal("nng_send", rv);
+ }
+
+ // RECV
+ for (;;) {
+ char *buf = NULL;
+ size_t sz;
+ if ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) !=0) {
+ if (rv == NNG_ETIMEDOUT) {
+ fatal("nng_recv", rv);
+ }
+ }
+ printf("%s: RECEIVED '%s' FROM BUS\n", argv[1], buf); // <1>
+ nng_free(buf, sz);
+ }
+ nng_close(sock);
+ return (0);
+}
+
+int
+main(int argc, char **argv)
+{
+ if (argc >= 3) {
+ return (node(argc, argv));
+ }
+ fprintf(stderr, "Usage: bus <NODE_NAME> <URL> <URL> ...\n");
+ return 1;
+}
diff --git a/_adoc/gettingstarted/nng/src/bus.out b/_adoc/gettingstarted/nng/src/bus.out
new file mode 100644
index 0000000..690004c
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/bus.out
@@ -0,0 +1,16 @@
+node3: SENDING 'node3' ONTO BUS
+node0: SENDING 'node0' ONTO BUS
+node1: SENDING 'node1' ONTO BUS
+node2: SENDING 'node2' ONTO BUS
+node0: RECEIVED 'node1' FROM BUS
+node1: RECEIVED 'node0' FROM BUS
+node2: RECEIVED 'node0' FROM BUS
+node3: RECEIVED 'node1' FROM BUS
+node0: RECEIVED 'node2' FROM BUS
+node1: RECEIVED 'node2' FROM BUS
+node3: RECEIVED 'node2' FROM BUS
+node0: RECEIVED 'node3' FROM BUS
+node2: RECEIVED 'node3' FROM BUS
+node1: RECEIVED 'node3' FROM BUS
+node3: RECEIVED 'node0' FROM BUS
+node2: RECEIVED 'node1' FROM BUS
diff --git a/_adoc/gettingstarted/nng/src/bus.sh b/_adoc/gettingstarted/nng/src/bus.sh
new file mode 100644
index 0000000..6a52379
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/bus.sh
@@ -0,0 +1,6 @@
+./bus node0 ipc:///tmp/node0.ipc ipc:///tmp/node1.ipc ipc:///tmp/node2.ipc & node0=$!
+./bus node1 ipc:///tmp/node1.ipc ipc:///tmp/node2.ipc ipc:///tmp/node3.ipc & node1=$!
+./bus node2 ipc:///tmp/node2.ipc ipc:///tmp/node3.ipc & node2=$!
+./bus node3 ipc:///tmp/node3.ipc ipc:///tmp/node0.ipc & node3=$!
+sleep 5
+kill $node0 $node1 $node2 $node3
diff --git a/_adoc/gettingstarted/nng/src/pair.c b/_adoc/gettingstarted/nng/src/pair.c
new file mode 100644
index 0000000..bb9e78c
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/pair.c
@@ -0,0 +1,97 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <nng/nng.h>
+#include <nng/protocol/pair0/pair.h>
+
+#define NODE0 "node0"
+#define NODE1 "node1"
+
+void
+fatal(const char *func, int rv)
+{
+ fprintf(stderr, "%s: %s\n", func, nng_strerror(rv));
+ exit(1);
+}
+
+int
+send_name(nng_socket sock, char *name)
+{
+ int rv;
+ printf("%s: SENDING \"%s\"\n", name, name);
+ if ((rv = nng_send(sock, name, strlen(name) + 1, 0)) != 0) {
+ fatal("nng_send", rv);
+ }
+ return (rv);
+}
+
+int
+recv_name(nng_socket sock, char *name)
+{
+ char *buf = NULL;
+ int rv;
+ size_t sz;
+ if ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) == 0) {
+ printf("%s: RECEIVED \"%s\"\n", name, buf); // <1>
+ nng_free(buf, sz);
+ }
+ return (rv);
+}
+
+int
+send_recv(nng_socket sock, char *name)
+{
+ int rv;
+ if ((rv = nng_setopt_ms(sock, NNG_OPT_RECVTIMEO, 100)) != 0) {
+ fatal("nng_setopt_ms", rv);
+ }
+ for (;;) {
+ recv_name(sock, name);
+ sleep(1);
+ send_name(sock, name);
+ }
+}
+
+int
+node0(const char *url)
+{
+ nng_socket sock;
+ int rv;
+ if ((rv = nng_pair0_open(&sock)) != 0) {
+ fatal("nng_pair0_open", rv);
+ }
+ if ((rv = nng_listen(sock, url, NULL, 0)) !=0) {
+ fatal("nng_listen", rv);
+ }
+ return (send_recv(sock, NODE0));
+}
+
+int
+node1(const char *url)
+{
+ nng_socket sock;
+ int rv;
+ sleep(1);
+ if ((rv = nng_pair0_open(&sock)) != 0) {
+ fatal("nng_pair0_open", rv);
+ }
+ if ((rv = nng_dial(sock, url, NULL, 0)) != 0) {
+ fatal("nng_dial", rv);
+ }
+ return (send_recv(sock, NODE1));
+}
+
+int
+main(int argc, char **argv)
+{
+ if ((argc > 1) && (strcmp(NODE0, argv[1]) == 0))
+ return (node0(argv[2]));
+
+ if ((argc > 1) && (strcmp(NODE1, argv[1]) == 0))
+ return (node1(argv[2]));
+
+ fprintf(stderr, "Usage: pair %s|%s <URL> <ARG> ...\n", NODE0, NODE1);
+ return 1;
+}
diff --git a/_adoc/gettingstarted/nng/src/pair.out b/_adoc/gettingstarted/nng/src/pair.out
new file mode 100644
index 0000000..0bdb0de
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/pair.out
@@ -0,0 +1,6 @@
+node0: SENDING "node0"
+node1: RECEIVED "node0"
+node1: SENDING "node1"
+node0: SENDING "node0"
+node0: RECEIVED "node1"
+node1: RECEIVED "node0"
diff --git a/_adoc/gettingstarted/nng/src/pair.sh b/_adoc/gettingstarted/nng/src/pair.sh
new file mode 100644
index 0000000..e6bec20
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/pair.sh
@@ -0,0 +1,5 @@
+./pair node0 ipc:///tmp/pair.ipc & node0=$!
+./pair node1 ipc:///tmp/pair.ipc & node1=$!
+sleep 3
+kill $node0 $node1
+
diff --git a/_adoc/gettingstarted/nng/src/pipeline.c b/_adoc/gettingstarted/nng/src/pipeline.c
new file mode 100644
index 0000000..f2a48f2
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/pipeline.c
@@ -0,0 +1,78 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <nng/nng.h>
+#include <nng/protocol/pipeline0/pull.h>
+#include <nng/protocol/pipeline0/push.h>
+
+#define NODE0 "node0"
+#define NODE1 "node1"
+
+void
+fatal(const char *func, int rv)
+{
+ fprintf(stderr, "%s: %s\n", func, nng_strerror(rv));
+ exit(1);
+}
+
+int
+node0(const char *url)
+{
+ nng_socket sock;
+ int rv;
+
+ if ((rv = nng_pull0_open(&sock)) != 0) {
+ fatal("nng_pull0_open", rv);
+ }
+ if ((rv = nng_listen(sock, url, NULL, 0)) != 0) {
+ fatal("nng_listen", rv);
+ }
+ for (;;) {
+ char *buf = NULL;
+ size_t sz;
+ if ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) != 0) {
+ fatal("nng_recv", rv);
+ }
+ printf("NODE0: RECEIVED \"%s\"\n", buf); // <1>
+ nng_free(buf, sz);
+ }
+}
+
+int
+node1(const char *url, char *msg)
+{
+ int sz_msg = strlen(msg) + 1; // '\0' too
+ nng_socket sock;
+ int rv;
+ int bytes;
+
+ if ((rv = nng_push0_open(&sock)) != 0) {
+ fatal("nng_push0_open", rv);
+ }
+ if ((rv = nng_dial(sock, url, NULL, 0)) != 0) {
+ fatal("nng_dial", rv);
+ }
+ printf("NODE1: SENDING \"%s\"\n", msg);
+ if ((rv = nng_send(sock, msg, strlen(msg)+1, 0)) != 0) {
+ fatal("nng_send", rv);
+ }
+ sleep(1); // wait for messages to flush before shutting down
+ nng_close(sock);
+ return (0);
+}
+
+int
+main(int argc, char **argv)
+{
+ if ((argc > 1) && (strcmp(NODE0, argv[1]) == 0))
+ return (node0(argv[2]));
+
+ if ((argc > 2) && (strcmp(NODE1, argv[1]) == 0))
+ return (node1(argv[2], argv[3]));
+
+ fprintf(stderr, "Usage: pipeline %s|%s <URL> <ARG> ...'\n",
+ NODE0, NODE1);
+ return (1);
+}
diff --git a/_adoc/gettingstarted/nng/src/pipeline.out b/_adoc/gettingstarted/nng/src/pipeline.out
new file mode 100644
index 0000000..0427e67
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/pipeline.out
@@ -0,0 +1,4 @@
+NODE1: SENDING "Hello, World!"
+NODE0: RECEIVED "Hello, World!"
+NODE1: SENDING "Goodbye."
+NODE0: RECEIVED "Goodbye."
diff --git a/_adoc/gettingstarted/nng/src/pipeline.sh b/_adoc/gettingstarted/nng/src/pipeline.sh
new file mode 100644
index 0000000..39b7815
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/pipeline.sh
@@ -0,0 +1,5 @@
+./pipeline node0 ipc:///tmp/pipeline.ipc & node0=$! && sleep 1
+./pipeline node1 ipc:///tmp/pipeline.ipc "Hello, World!"
+./pipeline node1 ipc:///tmp/pipeline.ipc "Goodbye."
+kill $node0
+
diff --git a/_adoc/gettingstarted/nng/src/pubsub.c b/_adoc/gettingstarted/nng/src/pubsub.c
new file mode 100644
index 0000000..012d1f5
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/pubsub.c
@@ -0,0 +1,92 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <nng/nng.h>
+#include <nng/protocol/pubsub0/pub.h>
+#include <nng/protocol/pubsub0/sub.h>
+
+#define SERVER "server"
+#define CLIENT "client"
+
+void
+fatal(const char *func, int rv)
+{
+ fprintf(stderr, "%s: %s\n", func, nng_strerror(rv));
+}
+
+char *
+date(void)
+{
+ time_t now = time(&now);
+ struct tm *info = localtime(&now);
+ char *text = asctime(info);
+ text[strlen(text)-1] = '\0'; // remove '\n'
+ return (text);
+}
+
+int
+server(const char *url)
+{
+ nng_socket sock;
+ int rv;
+
+ if ((rv = nng_pub0_open(&sock)) != 0) {
+ fatal("nng_pub0_open", rv);
+ }
+ if ((rv = nng_listen(sock, url, NULL, 0)) < 0) {
+ fatal("nng_listen", rv);
+ }
+ for (;;) {
+ char *d = date();
+ printf("SERVER: PUBLISHING DATE %s\n", d);
+ if ((rv = nng_send(sock, d, strlen(d) + 1, 0)) != 0) {
+ fatal("nng_send", rv);
+ }
+ sleep(1);
+ }
+}
+
+int
+client(const char *url, const char *name)
+{
+ nng_socket sock;
+ int rv;
+
+ if ((rv = nng_sub0_open(&sock)) != 0) {
+ fatal("nng_sub0_open", rv);
+ }
+
+ // subscribe to everything (empty means all topics)
+ if ((rv = nng_setopt(sock, NNG_OPT_SUB_SUBSCRIBE, "", 0)) != 0) {
+ fatal("nng_setopt", rv);
+ }
+ if ((rv = nng_dial(sock, url, NULL, 0)) != 0) {
+ fatal("nng_dial", rv);
+ }
+ for (;;) {
+ char *buf = NULL;
+ size_t sz;
+ if ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) != 0) {
+ fatal("nng_recv", rv);
+ }
+ printf("CLIENT (%s): RECEIVED %s\n", name, buf); // <1>
+ nng_free(buf, sz);
+ }
+}
+
+int
+main(const int argc, const char **argv)
+{
+ if ((argc >= 2) && (strcmp(SERVER, argv[1]) == 0))
+ return (server(argv[2]));
+
+ if ((argc >= 3) && (strcmp(CLIENT, argv[1]) == 0))
+ return (client (argv[2], argv[3]));
+
+ fprintf(stderr, "Usage: pubsub %s|%s <URL> <ARG> ...\n",
+ SERVER, CLIENT);
+ return 1;
+}
diff --git a/_adoc/gettingstarted/nng/src/pubsub.out b/_adoc/gettingstarted/nng/src/pubsub.out
new file mode 100644
index 0000000..4caf5f9
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/pubsub.out
@@ -0,0 +1,21 @@
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:31 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:32 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:32 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:32 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:32 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:33 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:33 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:33 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:33 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:34 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:34 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:34 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:34 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:35 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:35 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:35 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:35 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:36 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:36 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:36 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:36 2018
diff --git a/_adoc/gettingstarted/nng/src/pubsub.sh b/_adoc/gettingstarted/nng/src/pubsub.sh
new file mode 100644
index 0000000..c3f1c59
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/pubsub.sh
@@ -0,0 +1,6 @@
+./pubsub server ipc:///tmp/pubsub.ipc & server=$! && sleep 1
+./pubsub client ipc:///tmp/pubsub.ipc client0 & client0=$!
+./pubsub client ipc:///tmp/pubsub.ipc client1 & client1=$!
+./pubsub client ipc:///tmp/pubsub.ipc client2 & client2=$!
+sleep 5
+kill $server $client0 $client1 $client2
diff --git a/_adoc/gettingstarted/nng/src/reqrep.c b/_adoc/gettingstarted/nng/src/reqrep.c
new file mode 100644
index 0000000..4ef0448
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/reqrep.c
@@ -0,0 +1,99 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+#include <nng/nng.h>
+#include <nng/protocol/reqrep0/rep.h>
+#include <nng/protocol/reqrep0/req.h>
+
+#define NODE0 "node0"
+#define NODE1 "node1"
+#define DATE "DATE"
+
+void
+fatal(const char *func, int rv)
+{
+ fprintf(stderr, "%s: %s\n", func, nng_strerror(rv));
+ exit(1);
+}
+
+char *
+date(void)
+{
+ time_t now = time(&now);
+ struct tm *info = localtime(&now);
+ char *text = asctime(info);
+ text[strlen(text)-1] = '\0'; // remove '\n'
+ return (text);
+}
+
+int
+node0(const char *url)
+{
+ nng_socket sock;
+ int rv;
+
+ if ((rv = nng_rep0_open(&sock)) != 0) {
+ fatal("nng_rep0_open", rv);
+ }
+ if ((rv = nng_listen(sock, url, NULL, 0)) != 0) {
+ fatal("nng_listen", rv);
+ }
+ for (;;) {
+ char *buf = NULL;
+ size_t sz;
+ if ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) != 0) {
+ fatal("nng_recv", rv);
+ }
+ if ((sz == (strlen(DATE) + 1)) && (strcmp(DATE, buf) == 0)) {
+ printf("NODE0: RECEIVED DATE REQUEST\n");
+ char *d = date();
+ printf("NODE0: SENDING DATE %s\n", d);
+ if ((rv = nng_send(sock, d, strlen(d) + 1, 0)) != 0) {
+ fatal("nng_send", rv);
+ }
+ }
+ nng_free(buf, sz);
+ }
+}
+
+int
+node1(const char *url)
+{
+ nng_socket sock;
+ int rv;
+ size_t sz;
+ char *buf = NULL;
+
+ if ((rv = nng_req0_open(&sock)) != 0) {
+ fatal("nng_socket", rv);
+ }
+ if ((rv = nng_dial(sock, url, NULL, 0)) != 0) {
+ fatal("nng_dial", rv);
+ }
+ printf("NODE1: SENDING DATE REQUEST %s\n", DATE);
+ if ((rv = nng_send(sock, DATE, strlen(DATE)+1, 0)) != 0) {
+ fatal("nng_send", rv);
+ }
+ if ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) != 0) {
+ fatal("nng_recv", rv);
+ }
+ printf("NODE1: RECEIVED DATE %s\n", buf); // <1>
+ nng_free(buf, sz);
+ nng_close(sock);
+ return (0);
+}
+
+int
+main(const int argc, const char **argv)
+{
+ if ((argc > 1) && (strcmp(NODE0, argv[1]) == 0))
+ return (node0(argv[2]));
+
+ if ((argc > 1) && (strcmp(NODE1, argv[1]) == 0))
+ return (node1(argv[2]));
+
+ fprintf(stderr, "Usage: reqrep %s|%s <URL> ...\n", NODE0, NODE1);
+ return (1);
+}
diff --git a/_adoc/gettingstarted/nng/src/reqrep.out b/_adoc/gettingstarted/nng/src/reqrep.out
new file mode 100644
index 0000000..edfe64b
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/reqrep.out
@@ -0,0 +1,4 @@
+NODE1: SENDING DATE REQUEST DATE
+NODE0: RECEIVED DATE REQUEST
+NODE0: SENDING DATE Tue Jan 9 09:17:02 2018
+NODE1: RECEIVED DATE Tue Jan 9 09:17:02 2018
diff --git a/_adoc/gettingstarted/nng/src/reqrep.sh b/_adoc/gettingstarted/nng/src/reqrep.sh
new file mode 100644
index 0000000..4a21bb3
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/reqrep.sh
@@ -0,0 +1,3 @@
+./reqrep node0 ipc:///tmp/reqrep.ipc & node0=$! && sleep 1
+./reqrep node1 ipc:///tmp/reqrep.ipc
+kill $node0
diff --git a/_adoc/gettingstarted/nng/src/survey.c b/_adoc/gettingstarted/nng/src/survey.c
new file mode 100644
index 0000000..1909830
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/survey.c
@@ -0,0 +1,110 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <nng/nng.h>
+#include <nng/protocol/survey0/survey.h>
+#include <nng/protocol/survey0/respond.h>
+
+#define SERVER "server"
+#define CLIENT "client"
+#define DATE "DATE"
+
+void
+fatal(const char *func, int rv)
+{
+ fprintf(stderr, "%s: %s\n", func, nng_strerror(rv));
+ exit(1);
+}
+
+char *
+date(void)
+{
+ time_t now = time(&now);
+ struct tm *info = localtime(&now);
+ char *text = asctime(info);
+ text[strlen(text)-1] = '\0'; // remove '\n'
+ return (text);
+}
+
+int
+server(const char *url)
+{
+ nng_socket sock;
+ int rv;
+
+ if ((rv = nng_surveyor0_open(&sock)) != 0) {
+ fatal("nng_surveyor0_open", rv);
+ }
+ if ((rv = nng_listen(sock, url, NULL, 0)) != 0) {
+ fatal("nng_listen", rv);
+ }
+ for (;;) {
+ printf("SERVER: SENDING DATE SURVEY REQUEST\n");
+ if ((rv = nng_send(sock, DATE, strlen(DATE) + 1, 0)) != 0) {
+ fatal("nng_send", rv);
+ }
+
+ for (;;) {
+ char *buf = NULL;
+ size_t sz;
+ rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC);
+ if (rv == NNG_ETIMEDOUT) {
+ break;
+ }
+ if (rv != 0) {
+ fatal("nng_recv", rv);
+ }
+ printf("SERVER: RECEIVED \"%s\" SURVEY RESPONSE\n",
+ buf); // <1>
+ nng_free(buf, sz);
+ }
+
+ printf("SERVER: SURVEY COMPLETE\n");
+ }
+}
+
+int
+client(const char *url, const char *name)
+{
+ nng_socket sock;
+ int rv;
+
+ if ((rv = nng_respondent0_open(&sock)) != 0) {
+ fatal("nng_respondent0_open", rv);
+ }
+ if ((rv = nng_dial(sock, url, NULL, NNG_FLAG_NONBLOCK)) != 0) {
+ fatal("nng_dial", rv);
+ }
+ for (;;) {
+ char *buf = NULL;
+ size_t sz;
+ if ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) == 0) {
+ printf("CLIENT (%s): RECEIVED \"%s\" SURVEY REQUEST\n",
+ name, buf); // <1>
+ nng_free(buf, sz);
+ char *d = date();
+ printf("CLIENT (%s): SENDING DATE SURVEY RESPONSE\n",
+ name);
+ if ((rv = nng_send(sock, d, strlen(d) + 1, 0)) != 0) {
+ fatal("nng_send", rv);
+ }
+ }
+ }
+}
+
+int
+main(const int argc, const char **argv)
+{
+ if ((argc >= 2) && (strcmp(SERVER, argv[1]) == 0))
+ return (server(argv[2]));
+
+ if ((argc >= 3) && (strcmp(CLIENT, argv[1]) == 0))
+ return (client(argv[2], argv[3]));
+
+ fprintf(stderr, "Usage: survey %s|%s <URL> <ARG> ...\n",
+ SERVER, CLIENT);
+ return 1;
+}
diff --git a/_adoc/gettingstarted/nng/src/survey.out b/_adoc/gettingstarted/nng/src/survey.out
new file mode 100644
index 0000000..d300e71
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/survey.out
@@ -0,0 +1,23 @@
+SERVER: SENDING DATE SURVEY REQUEST
+SERVER: SURVEY COMPLETE
+SERVER: SENDING DATE SURVEY REQUEST
+CLIENT (client2): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client0): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client1): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client2): SENDING DATE SURVEY RESPONSE
+CLIENT (client1): SENDING DATE SURVEY RESPONSE
+CLIENT (client0): SENDING DATE SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:40 2018" SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:40 2018" SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:40 2018" SURVEY RESPONSE
+SERVER: SURVEY COMPLETE
+SERVER: SENDING DATE SURVEY REQUEST
+CLIENT (client2): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client2): SENDING DATE SURVEY RESPONSE
+CLIENT (client0): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client0): SENDING DATE SURVEY RESPONSE
+CLIENT (client1): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client1): SENDING DATE SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:41 2018" SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:41 2018" SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:41 2018" SURVEY RESPONSE
diff --git a/_adoc/gettingstarted/nng/src/survey.sh b/_adoc/gettingstarted/nng/src/survey.sh
new file mode 100644
index 0000000..d5bac72
--- /dev/null
+++ b/_adoc/gettingstarted/nng/src/survey.sh
@@ -0,0 +1,6 @@
+./survey server ipc:///tmp/survey.ipc & server=$!
+./survey client ipc:///tmp/survey.ipc client0 & client0=$!
+./survey client ipc:///tmp/survey.ipc client1 & client1=$!
+./survey client ipc:///tmp/survey.ipc client2 & client2=$!
+sleep 3 # <1>
+kill $server $client0 $client1 $client2
diff --git a/_adoc/gettingstarted/nng/survey.adoc b/_adoc/gettingstarted/nng/survey.adoc
new file mode 100644
index 0000000..1ff2397
--- /dev/null
+++ b/_adoc/gettingstarted/nng/survey.adoc
@@ -0,0 +1,40 @@
+---
+layout: default
+---
+:source-highlighter: coderay
+:icons: font
+
+include::banner.adoc[]
+
+== Survey (Everybody Votes)
+
+image::../survey.png[Everybody Votes]
+
+The surveyor pattern is used to send a timed survey out, responses
+are individually returned until the survey has expired. This pattern
+is useful for service discovery and voting algorithms.
+
+.survey.c
+[source,c]
+----
+include::src/survey.c[]
+----
+<1> Blithely assumes message is ASCIIZ string. Real code should check it.
+
+.Compilation
+[source,bash]
+----
+gcc survey.c -lnng -o survey
+----
+
+.Execution
+[source,bash]
+----
+include::src/survey.sh[]
+----
+<1> The first survey times out with no responses because the clients aren’t connected yet.
+
+.Output
+----
+include::src/survey.out[]
+----
diff --git a/_adoc/gettingstarted/pair.adoc b/_adoc/gettingstarted/pair.adoc
index b96a5db..77b22f8 100644
--- a/_adoc/gettingstarted/pair.adoc
+++ b/_adoc/gettingstarted/pair.adoc
@@ -38,8 +38,9 @@
.Output
----
-NODE1: SENDING DATE REQUEST DATE
-NODE0: RECEIVED DATE REQUEST
-NODE0: SENDING DATE Sat Sep 7 17:39:01 2013
-NODE1: RECEIVED DATE Sat Sep 7 17:39:01 2013
+node0: SENDING "node0"
+node1: SENDING "node1"
+node1: RECEIVED"node0"
+node0: SENDING "node0"
+node0: RECEIVED"node1"
----
diff --git a/_adoc/gettingstarted/pubsub.adoc b/_adoc/gettingstarted/pubsub.adoc
index f92f3be..43eb397 100644
--- a/_adoc/gettingstarted/pubsub.adoc
+++ b/_adoc/gettingstarted/pubsub.adoc
@@ -23,7 +23,7 @@
.Compilation
[source,bash]
----
-gcc pubsub.c /usr/local/lib/libnanomsg.a -o pubsub
+gcc pubsub.c -lnanomsg -o pubsub
----
.Execution
diff --git a/_adoc/gettingstarted/survey.adoc b/_adoc/gettingstarted/survey.adoc
index e871b58..b461f3a 100644
--- a/_adoc/gettingstarted/survey.adoc
+++ b/_adoc/gettingstarted/survey.adoc
@@ -24,7 +24,7 @@
.Compilation
[source,bash]
----
-gcc survey.c -lnanmosg -o survey
+gcc survey.c -lnanomosg -o survey
----
.Execution
diff --git a/gettingstarted/bus.html b/gettingstarted/bus.html
index 3535b1a..6b05e0d 100644
--- a/gettingstarted/bus.html
+++ b/gettingstarted/bus.html
@@ -542,6 +542,19 @@
</tr>
</table>
</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+If you want to use the experimental <a href="https://github.com/nanomsg/nng">nng</a>
+library instead, see the document <a href="nng/index.html">Getting Started with 'nng'</a>.
+</td>
+</tr>
+</table>
+</div>
</div>
</div>
<div class="sect1">
@@ -643,7 +656,7 @@
<div class="listingblock">
<div class="title">Compilation</div>
<div class="content">
-<pre class="CodeRay highlight"><code data-lang="bash">gcc bus.c -lnanomsg.a -o bus</code></pre>
+<pre class="CodeRay highlight"><code data-lang="bash">gcc bus.c -lnanomsg -o bus</code></pre>
</div>
</div>
<div class="listingblock">
@@ -683,7 +696,7 @@
</div>
<div id="footer">
<div id="footer-text">
-Last updated 2018-01-09 01:08:26 UTC
+Last updated 2018-01-09 14:17:57 UTC
</div>
</div>
</body>
diff --git a/gettingstarted/index.html b/gettingstarted/index.html
index fcc7978..fe35986 100644
--- a/gettingstarted/index.html
+++ b/gettingstarted/index.html
@@ -542,6 +542,19 @@
</tr>
</table>
</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+If you want to use the experimental <a href="https://github.com/nanomsg/nng">nng</a>
+library instead, see the document <a href="nng/index.html">Getting Started with 'nng'</a>.
+</td>
+</tr>
+</table>
+</div>
</div>
</div>
<div class="sect1">
diff --git a/gettingstarted/nng/banner.html b/gettingstarted/nng/banner.html
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/gettingstarted/nng/banner.html
diff --git a/gettingstarted/nng/bus.html b/gettingstarted/nng/bus.html
new file mode 100644
index 0000000..aaf437b
--- /dev/null
+++ b/gettingstarted/nng/bus.html
@@ -0,0 +1,692 @@
+---
+layout: default
+---
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta name="generator" content="Asciidoctor 1.5.6.1">
+<title>Getting Started with 'nng'</title>
+<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700">
+<style>
+/* Asciidoctor default stylesheet | MIT License | http://asciidoctor.org */
+/* Remove comment around @import statement below when using as a custom stylesheet */
+/*@import "https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700";*/
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+audio:not([controls]){display:none;height:0}
+[hidden],template{display:none}
+script{display:none!important}
+html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}
+a{background:transparent}
+a:focus{outline:thin dotted}
+a:active,a:hover{outline:0}
+h1{font-size:2em;margin:.67em 0}
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+dfn{font-style:italic}
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+pre{white-space:pre-wrap}
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+small{font-size:80%}
+sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
+sup{top:-.5em}
+sub{bottom:-.25em}
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+svg:not(:root){overflow:hidden}
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+button,input{line-height:normal}
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+button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer}
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+input[type="search"]{-webkit-appearance:textfield;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;box-sizing:content-box}
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+textarea{overflow:auto;vertical-align:top}
+table{border-collapse:collapse;border-spacing:0}
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+html,body{font-size:100%}
+body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;font-weight:400;font-style:normal;line-height:1;position:relative;cursor:auto;tab-size:4;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}
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+.text-left{text-align:left!important}
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+.text-center{text-align:center!important}
+.text-justify{text-align:justify!important}
+.hide{display:none}
+img,object,svg{display:inline-block;vertical-align:middle}
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+select{width:100%}
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+a{color:#2156a5;text-decoration:underline;line-height:inherit}
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+a img{border:none}
+p{font-family:inherit;font-weight:400;font-size:1em;line-height:1.6;margin-bottom:1.25em;text-rendering:optimizeLegibility}
+p aside{font-size:.875em;line-height:1.35;font-style:italic}
+h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{font-family:"Open Sans","DejaVu Sans",sans-serif;font-weight:300;font-style:normal;color:#ba3925;text-rendering:optimizeLegibility;margin-top:1em;margin-bottom:.5em;line-height:1.0125em}
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+</style>
+</head>
+<body class="article">
+<div id="header">
+<h1><a href="index.html">Getting Started with 'nng'</a></h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+This document is derived from an original post by Tim Dysinger.
+However, the examples here are for <a href="https://github.com/nanomsg/nng">nng</a>
+instead of <a href="https://github.com/nanomsg/nanomsg">nanomsg</a>. For the legacy
+nanomsg version of this, see <a href="../index.html">Getting Started with 'nanomsg'</a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_bus_routing">Bus (Routing)</h2>
+<div class="sectionbody">
+<div class="imageblock">
+<div class="content">
+<img src="../bus.png" alt="A Simple Bus">
+</div>
+</div>
+<div class="paragraph">
+<p>The bus protocol is useful for routing applications, or for building
+fully interconnected mesh networks. In this pattern, messages are
+sent to every directly connected peer.</p>
+</div>
+<div class="listingblock">
+<div class="title">bus.c</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c"><span class="preprocessor">#include</span> <span class="include"><stdio.h></span>
+<span class="preprocessor">#include</span> <span class="include"><stdlib.h></span>
+<span class="preprocessor">#include</span> <span class="include"><string.h></span>
+<span class="preprocessor">#include</span> <span class="include"><unistd.h></span>
+
+<span class="preprocessor">#include</span> <span class="include"><nng/nng.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/bus0/bus.h></span>
+
+<span class="directive">void</span>
+fatal(<span class="directive">const</span> <span class="predefined-type">char</span> *func, <span class="predefined-type">int</span> rv)
+{
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">%s: %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, func, nng_strerror(rv));
+ exit(<span class="integer">1</span>);
+}
+
+<span class="predefined-type">int</span>
+node(<span class="predefined-type">int</span> argc, <span class="predefined-type">char</span> **argv)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+ size_t sz;
+
+ <span class="keyword">if</span> ((rv = nng_bus0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_bus0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_listen(sock, argv[<span class="integer">2</span>], <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_listen</span><span class="delimiter">"</span></span>, rv);
+ }
+
+ sleep(<span class="integer">1</span>); <span class="comment">// wait for peers to bind</span>
+ <span class="keyword">if</span> (argc >= <span class="integer">3</span>) {
+ <span class="keyword">for</span> (<span class="predefined-type">int</span> x = <span class="integer">3</span>; x < argc; x++) {
+ <span class="keyword">if</span> ((rv = nng_dial(sock, argv[x], <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_dial</span><span class="delimiter">"</span></span>, rv);
+ }
+ }
+ }
+
+ sleep(<span class="integer">1</span>); <span class="comment">// wait for connects to establish</span>
+
+ <span class="comment">// SEND</span>
+ sz = strlen(argv[<span class="integer">1</span>]) + <span class="integer">1</span>; <span class="comment">// '\0' too</span>
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">%s: SENDING '%s' ONTO BUS</span><span class="char">\n</span><span class="delimiter">"</span></span>, argv[<span class="integer">1</span>], argv[<span class="integer">1</span>]);
+ <span class="keyword">if</span> ((rv = nng_send(sock, argv[<span class="integer">1</span>], sz, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_send</span><span class="delimiter">"</span></span>, rv);
+ }
+
+ <span class="comment">// RECV</span>
+ <span class="keyword">for</span> (;;) {
+ <span class="predefined-type">char</span> *buf = <span class="predefined-constant">NULL</span>;
+ size_t sz;
+ <span class="keyword">if</span> ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) !=<span class="integer">0</span>) {
+ <span class="keyword">if</span> (rv == NNG_ETIMEDOUT) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_recv</span><span class="delimiter">"</span></span>, rv);
+ }
+ }
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">%s: RECEIVED '%s' FROM BUS</span><span class="char">\n</span><span class="delimiter">"</span></span>, argv[<span class="integer">1</span>], buf); <i class="conum" data-value="1"></i><b>(1)</b>
+ nng_free(buf, sz);
+ }
+ nng_close(sock);
+ <span class="keyword">return</span> (<span class="integer">0</span>);
+}
+
+<span class="predefined-type">int</span>
+main(<span class="predefined-type">int</span> argc, <span class="predefined-type">char</span> **argv)
+{
+ <span class="keyword">if</span> (argc >= <span class="integer">3</span>) {
+ <span class="keyword">return</span> (node(argc, argv));
+ }
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">Usage: bus <NODE_NAME> <URL> <URL> ...</span><span class="char">\n</span><span class="delimiter">"</span></span>);
+ <span class="keyword">return</span> <span class="integer">1</span>;
+}</code></pre>
+</div>
+</div>
+<div class="colist arabic">
+<table>
+<tr>
+<td><i class="conum" data-value="1"></i><b>1</b></td>
+<td>Blithely assumes message is ASCIIZ string. Real code should check it.</td>
+</tr>
+</table>
+</div>
+<div class="listingblock">
+<div class="title">Compilation</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">gcc bus.c -lnng -o bus</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Execution</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">./bus node0 ipc:///tmp/node0.ipc ipc:///tmp/node1.ipc ipc:///tmp/node2.ipc & node0=$!
+./bus node1 ipc:///tmp/node1.ipc ipc:///tmp/node2.ipc ipc:///tmp/node3.ipc & node1=$!
+./bus node2 ipc:///tmp/node2.ipc ipc:///tmp/node3.ipc & node2=$!
+./bus node3 ipc:///tmp/node3.ipc ipc:///tmp/node0.ipc & node3=$!
+sleep 5
+kill $node0 $node1 $node2 $node3</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Output</div>
+<div class="content">
+<pre>node3: SENDING 'node3' ONTO BUS
+node0: SENDING 'node0' ONTO BUS
+node1: SENDING 'node1' ONTO BUS
+node2: SENDING 'node2' ONTO BUS
+node0: RECEIVED 'node1' FROM BUS
+node1: RECEIVED 'node0' FROM BUS
+node2: RECEIVED 'node0' FROM BUS
+node3: RECEIVED 'node1' FROM BUS
+node0: RECEIVED 'node2' FROM BUS
+node1: RECEIVED 'node2' FROM BUS
+node3: RECEIVED 'node2' FROM BUS
+node0: RECEIVED 'node3' FROM BUS
+node2: RECEIVED 'node3' FROM BUS
+node1: RECEIVED 'node3' FROM BUS
+node3: RECEIVED 'node0' FROM BUS
+node2: RECEIVED 'node1' FROM BUS</pre>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2018-01-09 19:42:00 UTC
+</div>
+</div>
+</body>
+</html>
diff --git a/gettingstarted/nng/index.html b/gettingstarted/nng/index.html
new file mode 100644
index 0000000..b7acc5f
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+++ b/gettingstarted/nng/index.html
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+---
+layout: default
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+<head>
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+<meta name="generator" content="Asciidoctor 1.5.6.1">
+<title>Getting Started with 'nng'</title>
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+<body class="article">
+<div id="header">
+<h1><a href="#">Getting Started with 'nng'</a></h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+This document is derived from an original post by Tim Dysinger.
+However, the examples here are for <a href="https://github.com/nanomsg/nng">nng</a>
+instead of <a href="https://github.com/nanomsg/nanomsg">nanomsg</a>. For the legacy
+nanomsg version of this, see <a href="../index.html">Getting Started with 'nanomsg'</a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_messaging_patterns">Messaging Patterns</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="http://nanomsg.github.io/nng">nng</a> is a messaging framework that attempts to
+help solve common messaging problems with one of a few patterns ('protocols'
+in nng parlance.)</p>
+</div>
+<div class="paragraph">
+<p>Following are examples of each pattern type in C.</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p><a href="pipeline.html">Pipeline (A One-Way Pipe)</a></p>
+</li>
+<li>
+<p><a href="reqrep.html">Request/Reply (I ask, you answer)</a></p>
+</li>
+<li>
+<p><a href="pair.html">Pair (Two Way Radio)</a></p>
+</li>
+<li>
+<p><a href="pubsub.html">Pub/Sub (Topics & Broadcast)</a></p>
+</li>
+<li>
+<p><a href="survey.html">Survey (Everybody Votes)</a></p>
+</li>
+<li>
+<p><a href="bus.html">Bus (Routing)</a></p>
+</li>
+</ul>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2018-01-09 02:10:15 UTC
+</div>
+</div>
+</body>
+</html>
diff --git a/gettingstarted/nng/pair.html b/gettingstarted/nng/pair.html
new file mode 100644
index 0000000..f4a8a28
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+</head>
+<body class="article">
+<div id="header">
+<h1><a href="index.html">Getting Started with 'nng'</a></h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+This document is derived from an original post by Tim Dysinger.
+However, the examples here are for <a href="https://github.com/nanomsg/nng">nng</a>
+instead of <a href="https://github.com/nanomsg/nanomsg">nanomsg</a>. For the legacy
+nanomsg version of this, see <a href="../index.html">Getting Started with 'nanomsg'</a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_pair_two_way_radio">Pair (Two Way Radio)</h2>
+<div class="sectionbody">
+<div class="imageblock">
+<div class="content">
+<img src="../pair.png" alt="Two Way Radio">
+</div>
+</div>
+<div class="paragraph">
+<p>The pair pattern is used when there a one-to-one peer relationship.
+Only one peer may be connected to another peer at a time, but both
+may speak freely.</p>
+</div>
+<div class="listingblock">
+<div class="title">pair.c</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c"><span class="preprocessor">#include</span> <span class="include"><stdio.h></span>
+<span class="preprocessor">#include</span> <span class="include"><stdlib.h></span>
+<span class="preprocessor">#include</span> <span class="include"><string.h></span>
+<span class="preprocessor">#include</span> <span class="include"><unistd.h></span>
+
+<span class="preprocessor">#include</span> <span class="include"><nng/nng.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/pair0/pair.h></span>
+
+<span class="preprocessor">#define</span> NODE0 <span class="string"><span class="delimiter">"</span><span class="content">node0</span><span class="delimiter">"</span></span>
+<span class="preprocessor">#define</span> NODE1 <span class="string"><span class="delimiter">"</span><span class="content">node1</span><span class="delimiter">"</span></span>
+
+<span class="directive">void</span>
+fatal(<span class="directive">const</span> <span class="predefined-type">char</span> *func, <span class="predefined-type">int</span> rv)
+{
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">%s: %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, func, nng_strerror(rv));
+ exit(<span class="integer">1</span>);
+}
+
+<span class="predefined-type">int</span>
+send_name(nng_socket sock, <span class="predefined-type">char</span> *name)
+{
+ <span class="predefined-type">int</span> rv;
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">%s: SENDING </span><span class="char">\"</span><span class="content">%s</span><span class="char">\"</span><span class="char">\n</span><span class="delimiter">"</span></span>, name, name);
+ <span class="keyword">if</span> ((rv = nng_send(sock, name, strlen(name) + <span class="integer">1</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_send</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">return</span> (rv);
+}
+
+<span class="predefined-type">int</span>
+recv_name(nng_socket sock, <span class="predefined-type">char</span> *name)
+{
+ <span class="predefined-type">char</span> *buf = <span class="predefined-constant">NULL</span>;
+ <span class="predefined-type">int</span> rv;
+ size_t sz;
+ <span class="keyword">if</span> ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) == <span class="integer">0</span>) {
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">%s: RECEIVED </span><span class="char">\"</span><span class="content">%s</span><span class="char">\"</span><span class="char">\n</span><span class="delimiter">"</span></span>, name, buf); <i class="conum" data-value="1"></i><b>(1)</b>
+ nng_free(buf, sz);
+ }
+ <span class="keyword">return</span> (rv);
+}
+
+<span class="predefined-type">int</span>
+send_recv(nng_socket sock, <span class="predefined-type">char</span> *name)
+{
+ <span class="predefined-type">int</span> rv;
+ <span class="keyword">if</span> ((rv = nng_setopt_ms(sock, NNG_OPT_RECVTIMEO, <span class="integer">100</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_setopt_ms</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">for</span> (;;) {
+ recv_name(sock, name);
+ sleep(<span class="integer">1</span>);
+ send_name(sock, name);
+ }
+}
+
+<span class="predefined-type">int</span>
+node0(<span class="directive">const</span> <span class="predefined-type">char</span> *url)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+ <span class="keyword">if</span> ((rv = nng_pair0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_pair0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_listen(sock, url, <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) !=<span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_listen</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">return</span> (send_recv(sock, NODE0));
+}
+
+<span class="predefined-type">int</span>
+node1(<span class="directive">const</span> <span class="predefined-type">char</span> *url)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+ sleep(<span class="integer">1</span>);
+ <span class="keyword">if</span> ((rv = nng_pair0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_pair0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_dial(sock, url, <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_dial</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">return</span> (send_recv(sock, NODE1));
+}
+
+<span class="predefined-type">int</span>
+main(<span class="predefined-type">int</span> argc, <span class="predefined-type">char</span> **argv)
+{
+ <span class="keyword">if</span> ((argc > <span class="integer">1</span>) && (strcmp(NODE0, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (node0(argv[<span class="integer">2</span>]));
+
+ <span class="keyword">if</span> ((argc > <span class="integer">1</span>) && (strcmp(NODE1, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (node1(argv[<span class="integer">2</span>]));
+
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">Usage: pair %s|%s <URL> <ARG> ...</span><span class="char">\n</span><span class="delimiter">"</span></span>, NODE0, NODE1);
+ <span class="keyword">return</span> <span class="integer">1</span>;
+}</code></pre>
+</div>
+</div>
+<div class="colist arabic">
+<table>
+<tr>
+<td><i class="conum" data-value="1"></i><b>1</b></td>
+<td>Blithely assumes message is ASCIIZ string. Real code should check it.</td>
+</tr>
+</table>
+</div>
+<div class="listingblock">
+<div class="title">Compilation</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">gcc pair.c -lnng -o pair</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Execution</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">./pair node0 ipc:///tmp/pair.ipc & node0=$!
+./pair node1 ipc:///tmp/pair.ipc & node1=$!
+sleep 3
+kill $node0 $node1</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Output</div>
+<div class="content">
+<pre>node0: SENDING "node0"
+node1: RECEIVED "node0"
+node1: SENDING "node1"
+node0: SENDING "node0"
+node0: RECEIVED "node1"
+node1: RECEIVED "node0"</pre>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2018-01-09 19:42:00 UTC
+</div>
+</div>
+</body>
+</html>
diff --git a/gettingstarted/nng/pipeline.html b/gettingstarted/nng/pipeline.html
new file mode 100644
index 0000000..e43a294
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+++ b/gettingstarted/nng/pipeline.html
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+---
+layout: default
+---
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+<title>Getting Started with 'nng'</title>
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+</style>
+</head>
+<body class="article">
+<div id="header">
+<h1><a href="index.html">Getting Started with 'nng'</a></h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+This document is derived from an original post by Tim Dysinger.
+However, the examples here are for <a href="https://github.com/nanomsg/nng">nng</a>
+instead of <a href="https://github.com/nanomsg/nanomsg">nanomsg</a>. For the legacy
+nanomsg version of this, see <a href="../index.html">Getting Started with 'nanomsg'</a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_pipeline_a_one_way_pipe">Pipeline (A One-Way Pipe)</h2>
+<div class="sectionbody">
+<div class="imageblock">
+<div class="content">
+<img src="../pipeline.png" alt="A One-Way Pipe">
+</div>
+</div>
+<div class="paragraph">
+<p>This pattern is useful for solving producer/consumer problems, including
+load-balancing. Messages flow from the push side to the pull side. If
+multiple peers are connected, the pattern attempts to distribute fairly.</p>
+</div>
+<div class="listingblock">
+<div class="title">pipeline.c</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="C"><span class="preprocessor">#include</span> <span class="include"><stdlib.h></span>
+<span class="preprocessor">#include</span> <span class="include"><stdio.h></span>
+<span class="preprocessor">#include</span> <span class="include"><string.h></span>
+<span class="preprocessor">#include</span> <span class="include"><unistd.h></span>
+
+<span class="preprocessor">#include</span> <span class="include"><nng/nng.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/pipeline0/pull.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/pipeline0/push.h></span>
+
+<span class="preprocessor">#define</span> NODE0 <span class="string"><span class="delimiter">"</span><span class="content">node0</span><span class="delimiter">"</span></span>
+<span class="preprocessor">#define</span> NODE1 <span class="string"><span class="delimiter">"</span><span class="content">node1</span><span class="delimiter">"</span></span>
+
+<span class="directive">void</span>
+fatal(<span class="directive">const</span> <span class="predefined-type">char</span> *func, <span class="predefined-type">int</span> rv)
+{
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">%s: %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, func, nng_strerror(rv));
+ exit(<span class="integer">1</span>);
+}
+
+<span class="predefined-type">int</span>
+node0(<span class="directive">const</span> <span class="predefined-type">char</span> *url)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+
+ <span class="keyword">if</span> ((rv = nng_pull0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_pull0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_listen(sock, url, <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_listen</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">for</span> (;;) {
+ <span class="predefined-type">char</span> *buf = <span class="predefined-constant">NULL</span>;
+ size_t sz;
+ <span class="keyword">if</span> ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_recv</span><span class="delimiter">"</span></span>, rv);
+ }
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">NODE0: RECEIVED </span><span class="char">\"</span><span class="content">%s</span><span class="char">\"</span><span class="char">\n</span><span class="delimiter">"</span></span>, buf); <i class="conum" data-value="1"></i><b>(1)</b>
+ nng_free(buf, sz);
+ }
+}
+
+<span class="predefined-type">int</span>
+node1(<span class="directive">const</span> <span class="predefined-type">char</span> *url, <span class="predefined-type">char</span> *msg)
+{
+ <span class="predefined-type">int</span> sz_msg = strlen(msg) + <span class="integer">1</span>; <span class="comment">// '\0' too</span>
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+ <span class="predefined-type">int</span> bytes;
+
+ <span class="keyword">if</span> ((rv = nng_push0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_push0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_dial(sock, url, <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_dial</span><span class="delimiter">"</span></span>, rv);
+ }
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">NODE1: SENDING </span><span class="char">\"</span><span class="content">%s</span><span class="char">\"</span><span class="char">\n</span><span class="delimiter">"</span></span>, msg);
+ <span class="keyword">if</span> ((rv = nng_send(sock, msg, strlen(msg)+<span class="integer">1</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_send</span><span class="delimiter">"</span></span>, rv);
+ }
+ sleep(<span class="integer">1</span>); <span class="comment">// wait for messages to flush before shutting down</span>
+ nng_close(sock);
+ <span class="keyword">return</span> (<span class="integer">0</span>);
+}
+
+<span class="predefined-type">int</span>
+main(<span class="predefined-type">int</span> argc, <span class="predefined-type">char</span> **argv)
+{
+ <span class="keyword">if</span> ((argc > <span class="integer">1</span>) && (strcmp(NODE0, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (node0(argv[<span class="integer">2</span>]));
+
+ <span class="keyword">if</span> ((argc > <span class="integer">2</span>) && (strcmp(NODE1, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (node1(argv[<span class="integer">2</span>], argv[<span class="integer">3</span>]));
+
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">Usage: pipeline %s|%s <URL> <ARG> ...'</span><span class="char">\n</span><span class="delimiter">"</span></span>,
+ NODE0, NODE1);
+ <span class="keyword">return</span> (<span class="integer">1</span>);
+}</code></pre>
+</div>
+</div>
+<div class="colist arabic">
+<table>
+<tr>
+<td><i class="conum" data-value="1"></i><b>1</b></td>
+<td>Blithely assumes message is ASCIIZ string. Real code should check it.</td>
+</tr>
+</table>
+</div>
+<div class="listingblock">
+<div class="title">Compilation</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">gcc pipeline.c -lnng -o pipeline</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Execution</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">./pipeline node0 ipc:///tmp/pipeline.ipc & node0=$! && sleep 1
+./pipeline node1 ipc:///tmp/pipeline.ipc "Hello, World!"
+./pipeline node1 ipc:///tmp/pipeline.ipc "Goodbye."
+kill $node0</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Output</div>
+<div class="content">
+<pre>NODE1: SENDING "Hello, World!"
+NODE0: RECEIVED "Hello, World!"
+NODE1: SENDING "Goodbye."
+NODE0: RECEIVED "Goodbye."</pre>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2018-01-09 19:42:00 UTC
+</div>
+</div>
+</body>
+</html>
diff --git a/gettingstarted/nng/pubsub.html b/gettingstarted/nng/pubsub.html
new file mode 100644
index 0000000..bf4c94d
--- /dev/null
+++ b/gettingstarted/nng/pubsub.html
@@ -0,0 +1,716 @@
+---
+layout: default
+---
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta name="generator" content="Asciidoctor 1.5.6.1">
+<title>Getting Started with 'nng'</title>
+<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700">
+<style>
+/* Asciidoctor default stylesheet | MIT License | http://asciidoctor.org */
+/* Remove comment around @import statement below when using as a custom stylesheet */
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+</head>
+<body class="article">
+<div id="header">
+<h1><a href="index.html">Getting Started with 'nng'</a></h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+This document is derived from an original post by Tim Dysinger.
+However, the examples here are for <a href="https://github.com/nanomsg/nng">nng</a>
+instead of <a href="https://github.com/nanomsg/nanomsg">nanomsg</a>. For the legacy
+nanomsg version of this, see <a href="../index.html">Getting Started with 'nanomsg'</a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_pub_sub_topics_broadcast">Pub/Sub (Topics & Broadcast)</h2>
+<div class="sectionbody">
+<div class="imageblock">
+<div class="content">
+<img src="../pubsub.png" alt="Topics & Broadcast">
+</div>
+</div>
+<div class="paragraph">
+<p>This pattern is used to allow a single broadcaster to publish messages
+to many subscribers, which may choose to limit which messages they receive.</p>
+</div>
+<div class="listingblock">
+<div class="title">pubsub.c</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c"><span class="preprocessor">#include</span> <span class="include"><stdlib.h></span>
+<span class="preprocessor">#include</span> <span class="include"><stdio.h></span>
+<span class="preprocessor">#include</span> <span class="include"><string.h></span>
+<span class="preprocessor">#include</span> <span class="include"><time.h></span>
+<span class="preprocessor">#include</span> <span class="include"><unistd.h></span>
+
+<span class="preprocessor">#include</span> <span class="include"><nng/nng.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/pubsub0/pub.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/pubsub0/sub.h></span>
+
+<span class="preprocessor">#define</span> SERVER <span class="string"><span class="delimiter">"</span><span class="content">server</span><span class="delimiter">"</span></span>
+<span class="preprocessor">#define</span> CLIENT <span class="string"><span class="delimiter">"</span><span class="content">client</span><span class="delimiter">"</span></span>
+
+<span class="directive">void</span>
+fatal(<span class="directive">const</span> <span class="predefined-type">char</span> *func, <span class="predefined-type">int</span> rv)
+{
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">%s: %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, func, nng_strerror(rv));
+}
+
+<span class="predefined-type">char</span> *
+date(<span class="directive">void</span>)
+{
+ time_t now = time(&now);
+ <span class="keyword">struct</span> tm *info = localtime(&now);
+ <span class="predefined-type">char</span> *text = asctime(info);
+ text[strlen(text)-<span class="integer">1</span>] = <span class="char">'\0'</span>; <span class="comment">// remove '\n'</span>
+ <span class="keyword">return</span> (text);
+}
+
+<span class="predefined-type">int</span>
+server(<span class="directive">const</span> <span class="predefined-type">char</span> *url)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+
+ <span class="keyword">if</span> ((rv = nng_pub0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_pub0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_listen(sock, url, <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) < <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_listen</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">for</span> (;;) {
+ <span class="predefined-type">char</span> *d = date();
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">SERVER: PUBLISHING DATE %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, d);
+ <span class="keyword">if</span> ((rv = nng_send(sock, d, strlen(d) + <span class="integer">1</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_send</span><span class="delimiter">"</span></span>, rv);
+ }
+ sleep(<span class="integer">1</span>);
+ }
+}
+
+<span class="predefined-type">int</span>
+client(<span class="directive">const</span> <span class="predefined-type">char</span> *url, <span class="directive">const</span> <span class="predefined-type">char</span> *name)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+
+ <span class="keyword">if</span> ((rv = nng_sub0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_sub0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+
+ <span class="comment">// subscribe to everything (empty means all topics)</span>
+ <span class="keyword">if</span> ((rv = nng_setopt(sock, NNG_OPT_SUB_SUBSCRIBE, <span class="string"><span class="delimiter">"</span><span class="delimiter">"</span></span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_setopt</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_dial(sock, url, <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_dial</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">for</span> (;;) {
+ <span class="predefined-type">char</span> *buf = <span class="predefined-constant">NULL</span>;
+ size_t sz;
+ <span class="keyword">if</span> ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_recv</span><span class="delimiter">"</span></span>, rv);
+ }
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">CLIENT (%s): RECEIVED %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, name, buf); <i class="conum" data-value="1"></i><b>(1)</b>
+ nng_free(buf, sz);
+ }
+}
+
+<span class="predefined-type">int</span>
+main(<span class="directive">const</span> <span class="predefined-type">int</span> argc, <span class="directive">const</span> <span class="predefined-type">char</span> **argv)
+{
+ <span class="keyword">if</span> ((argc >= <span class="integer">2</span>) && (strcmp(SERVER, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (server(argv[<span class="integer">2</span>]));
+
+ <span class="keyword">if</span> ((argc >= <span class="integer">3</span>) && (strcmp(CLIENT, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (client (argv[<span class="integer">2</span>], argv[<span class="integer">3</span>]));
+
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">Usage: pubsub %s|%s <URL> <ARG> ...</span><span class="char">\n</span><span class="delimiter">"</span></span>,
+ SERVER, CLIENT);
+ <span class="keyword">return</span> <span class="integer">1</span>;
+}</code></pre>
+</div>
+</div>
+<div class="colist arabic">
+<table>
+<tr>
+<td><i class="conum" data-value="1"></i><b>1</b></td>
+<td>Blithely assumes message is ASCIIZ string. Real code should check it.</td>
+</tr>
+</table>
+</div>
+<div class="listingblock">
+<div class="title">Compilation</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">gcc pubsub.c -lnng -o pubsub</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Execution</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">./pubsub server ipc:///tmp/pubsub.ipc & server=$! && sleep 1
+./pubsub client ipc:///tmp/pubsub.ipc client0 & client0=$!
+./pubsub client ipc:///tmp/pubsub.ipc client1 & client1=$!
+./pubsub client ipc:///tmp/pubsub.ipc client2 & client2=$!
+sleep 5
+kill $server $client0 $client1 $client2</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Output</div>
+<div class="content">
+<pre>SERVER: PUBLISHING DATE Tue Jan 9 08:21:31 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:32 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:32 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:32 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:32 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:33 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:33 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:33 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:33 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:34 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:34 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:34 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:34 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:35 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:35 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:35 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:35 2018
+SERVER: PUBLISHING DATE Tue Jan 9 08:21:36 2018
+CLIENT (client0): RECEIVED Tue Jan 9 08:21:36 2018
+CLIENT (client1): RECEIVED Tue Jan 9 08:21:36 2018
+CLIENT (client2): RECEIVED Tue Jan 9 08:21:36 2018</pre>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2018-01-09 19:42:00 UTC
+</div>
+</div>
+</body>
+</html>
diff --git a/gettingstarted/nng/pubsub2.html b/gettingstarted/nng/pubsub2.html
new file mode 100644
index 0000000..d2321c0
--- /dev/null
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+<body class="article">
+<div id="header">
+<h1><a href="index.html">Getting Started with 'nng'</a></h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+This document is derived from an original post by Tim Dysinger.
+However, the examples here are for <a href="https://github.com/nanomsg/nng">nng</a>
+instead of <a href="https://github.com/nanomsg/nanomsg">nanomsg</a>.
+</td>
+</tr>
+</table>
+</div>
+<div class="paragraph">
+<p></p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_pub_sub_topics_broadcast">Pub/Sub (Topics & Broadcast)</h2>
+<div class="sectionbody">
+<div class="imageblock">
+<div class="content">
+<img src="../pubsub.png" alt="Topics & Broadcast">
+</div>
+</div>
+<div class="paragraph">
+<p>This pattern is used to allow a single broadcaster to publish messages
+to many subscribers, which may choose to limit which messages they receive.</p>
+</div>
+<div class="listingblock">
+<div class="title">pubsub.c</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c">Unresolved directive in /Users/garrett/Projects/nanomsg-pages/_adoc/gettingstarted/tmpl/pubsub.adoc - include::src/pubsub.c[]</code></pre>
+</div>
+</div>
+<div class="colist arabic">
+<table>
+<tr>
+<td><i class="conum" data-value="1"></i><b>1</b></td>
+<td>Blithely assumes message is ASCIIZ string. Real code should check it.</td>
+</tr>
+</table>
+</div>
+<div class="listingblock">
+<div class="title">Compilation</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">Unresolved directive in /Users/garrett/Projects/nanomsg-pages/_adoc/gettingstarted/tmpl/pubsub.adoc - include::compile.adoc[]</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Execution</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">Unresolved directive in /Users/garrett/Projects/nanomsg-pages/_adoc/gettingstarted/tmpl/pubsub.adoc - include::src/pubsub.sh[]</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Output</div>
+<div class="content">
+<pre>Unresolved directive in /Users/garrett/Projects/nanomsg-pages/_adoc/gettingstarted/tmpl/pubsub.adoc - include::src/pubsub.out[]</pre>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2018-01-09 16:56:19 UTC
+</div>
+</div>
+</body>
+</html>
diff --git a/gettingstarted/nng/reqrep.html b/gettingstarted/nng/reqrep.html
new file mode 100644
index 0000000..0d63ff5
--- /dev/null
+++ b/gettingstarted/nng/reqrep.html
@@ -0,0 +1,706 @@
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+</head>
+<body class="article">
+<div id="header">
+<h1><a href="index.html">Getting Started with 'nng'</a></h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+This document is derived from an original post by Tim Dysinger.
+However, the examples here are for <a href="https://github.com/nanomsg/nng">nng</a>
+instead of <a href="https://github.com/nanomsg/nanomsg">nanomsg</a>. For the legacy
+nanomsg version of this, see <a href="../index.html">Getting Started with 'nanomsg'</a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_request_reply_i_ask_you_answer">Request/Reply (I ask, you answer)</h2>
+<div class="sectionbody">
+<div class="imageblock">
+<div class="content">
+<img src="../reqrep.png" alt="I ask" width="you answer">
+</div>
+</div>
+<div class="paragraph">
+<p>Request/Reply is used for synchronous communications where each question
+is responded with a single answer, for example remote procedure calls (RPCs).
+Like <a href="pipeline.html">Pipeline</a>, it also can perform load-balancing. This
+is the only reliable messaging pattern in the suite, as it automatically
+will retry if a request is not matched with a response.</p>
+</div>
+<div class="listingblock">
+<div class="title">reqprep.c</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c"><span class="preprocessor">#include</span> <span class="include"><stdlib.h></span>
+<span class="preprocessor">#include</span> <span class="include"><stdio.h></span>
+<span class="preprocessor">#include</span> <span class="include"><string.h></span>
+<span class="preprocessor">#include</span> <span class="include"><time.h></span>
+
+<span class="preprocessor">#include</span> <span class="include"><nng/nng.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/reqrep0/rep.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/reqrep0/req.h></span>
+
+<span class="preprocessor">#define</span> NODE0 <span class="string"><span class="delimiter">"</span><span class="content">node0</span><span class="delimiter">"</span></span>
+<span class="preprocessor">#define</span> NODE1 <span class="string"><span class="delimiter">"</span><span class="content">node1</span><span class="delimiter">"</span></span>
+<span class="preprocessor">#define</span> DATE <span class="string"><span class="delimiter">"</span><span class="content">DATE</span><span class="delimiter">"</span></span>
+
+<span class="directive">void</span>
+fatal(<span class="directive">const</span> <span class="predefined-type">char</span> *func, <span class="predefined-type">int</span> rv)
+{
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">%s: %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, func, nng_strerror(rv));
+ exit(<span class="integer">1</span>);
+}
+
+<span class="predefined-type">char</span> *
+date(<span class="directive">void</span>)
+{
+ time_t now = time(&now);
+ <span class="keyword">struct</span> tm *info = localtime(&now);
+ <span class="predefined-type">char</span> *text = asctime(info);
+ text[strlen(text)-<span class="integer">1</span>] = <span class="char">'\0'</span>; <span class="comment">// remove '\n'</span>
+ <span class="keyword">return</span> (text);
+}
+
+<span class="predefined-type">int</span>
+node0(<span class="directive">const</span> <span class="predefined-type">char</span> *url)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+
+ <span class="keyword">if</span> ((rv = nng_rep0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_rep0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_listen(sock, url, <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_listen</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">for</span> (;;) {
+ <span class="predefined-type">char</span> *buf = <span class="predefined-constant">NULL</span>;
+ size_t sz;
+ <span class="keyword">if</span> ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_recv</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((sz == (strlen(DATE) + <span class="integer">1</span>)) && (strcmp(DATE, buf) == <span class="integer">0</span>)) {
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">NODE0: RECEIVED DATE REQUEST</span><span class="char">\n</span><span class="delimiter">"</span></span>);
+ <span class="predefined-type">char</span> *d = date();
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">NODE0: SENDING DATE %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, d);
+ <span class="keyword">if</span> ((rv = nng_send(sock, d, strlen(d) + <span class="integer">1</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_send</span><span class="delimiter">"</span></span>, rv);
+ }
+ }
+ nng_free(buf, sz);
+ }
+}
+
+<span class="predefined-type">int</span>
+node1(<span class="directive">const</span> <span class="predefined-type">char</span> *url)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+ size_t sz;
+ <span class="predefined-type">char</span> *buf = <span class="predefined-constant">NULL</span>;
+
+ <span class="keyword">if</span> ((rv = nng_req0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_socket</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_dial(sock, url, <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_dial</span><span class="delimiter">"</span></span>, rv);
+ }
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">NODE1: SENDING DATE REQUEST %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, DATE);
+ <span class="keyword">if</span> ((rv = nng_send(sock, DATE, strlen(DATE)+<span class="integer">1</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_send</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_recv</span><span class="delimiter">"</span></span>, rv);
+ }
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">NODE1: RECEIVED DATE %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, buf); <i class="conum" data-value="1"></i><b>(1)</b>
+ nng_free(buf, sz);
+ nng_close(sock);
+ <span class="keyword">return</span> (<span class="integer">0</span>);
+}
+
+<span class="predefined-type">int</span>
+main(<span class="directive">const</span> <span class="predefined-type">int</span> argc, <span class="directive">const</span> <span class="predefined-type">char</span> **argv)
+{
+ <span class="keyword">if</span> ((argc > <span class="integer">1</span>) && (strcmp(NODE0, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (node0(argv[<span class="integer">2</span>]));
+
+ <span class="keyword">if</span> ((argc > <span class="integer">1</span>) && (strcmp(NODE1, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (node1(argv[<span class="integer">2</span>]));
+
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">Usage: reqrep %s|%s <URL> ...</span><span class="char">\n</span><span class="delimiter">"</span></span>, NODE0, NODE1);
+ <span class="keyword">return</span> (<span class="integer">1</span>);
+}</code></pre>
+</div>
+</div>
+<div class="colist arabic">
+<table>
+<tr>
+<td><i class="conum" data-value="1"></i><b>1</b></td>
+<td>Blithely assumes message is ASCIIZ string. Real code should check it.</td>
+</tr>
+</table>
+</div>
+<div class="listingblock">
+<div class="title">Compilation</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">gcc reqrep.c -lnng -o reqrep</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Execution</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">./reqrep node0 ipc:///tmp/reqrep.ipc & node0=$! && sleep 1
+./reqrep node1 ipc:///tmp/reqrep.ipc
+kill $node0</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Output</div>
+<div class="content">
+<pre>NODE1: SENDING DATE REQUEST DATE
+NODE0: RECEIVED DATE REQUEST
+NODE0: SENDING DATE Tue Jan 9 09:17:02 2018
+NODE1: RECEIVED DATE Tue Jan 9 09:17:02 2018</pre>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2018-01-09 19:42:00 UTC
+</div>
+</div>
+</body>
+</html>
diff --git a/gettingstarted/nng/survey.html b/gettingstarted/nng/survey.html
new file mode 100644
index 0000000..4908d7f
--- /dev/null
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+</head>
+<body class="article">
+<div id="header">
+<h1><a href="index.html">Getting Started with 'nng'</a></h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+This document is derived from an original post by Tim Dysinger.
+However, the examples here are for <a href="https://github.com/nanomsg/nng">nng</a>
+instead of <a href="https://github.com/nanomsg/nanomsg">nanomsg</a>. For the legacy
+nanomsg version of this, see <a href="../index.html">Getting Started with 'nanomsg'</a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_survey_everybody_votes">Survey (Everybody Votes)</h2>
+<div class="sectionbody">
+<div class="imageblock">
+<div class="content">
+<img src="../survey.png" alt="Everybody Votes">
+</div>
+</div>
+<div class="paragraph">
+<p>The surveyor pattern is used to send a timed survey out, responses
+are individually returned until the survey has expired. This pattern
+is useful for service discovery and voting algorithms.</p>
+</div>
+<div class="listingblock">
+<div class="title">survey.c</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="c"><span class="preprocessor">#include</span> <span class="include"><stdio.h></span>
+<span class="preprocessor">#include</span> <span class="include"><stdlib.h></span>
+<span class="preprocessor">#include</span> <span class="include"><string.h></span>
+<span class="preprocessor">#include</span> <span class="include"><time.h></span>
+<span class="preprocessor">#include</span> <span class="include"><unistd.h></span>
+
+<span class="preprocessor">#include</span> <span class="include"><nng/nng.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/survey0/survey.h></span>
+<span class="preprocessor">#include</span> <span class="include"><nng/protocol/survey0/respond.h></span>
+
+<span class="preprocessor">#define</span> SERVER <span class="string"><span class="delimiter">"</span><span class="content">server</span><span class="delimiter">"</span></span>
+<span class="preprocessor">#define</span> CLIENT <span class="string"><span class="delimiter">"</span><span class="content">client</span><span class="delimiter">"</span></span>
+<span class="preprocessor">#define</span> DATE <span class="string"><span class="delimiter">"</span><span class="content">DATE</span><span class="delimiter">"</span></span>
+
+<span class="directive">void</span>
+fatal(<span class="directive">const</span> <span class="predefined-type">char</span> *func, <span class="predefined-type">int</span> rv)
+{
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">%s: %s</span><span class="char">\n</span><span class="delimiter">"</span></span>, func, nng_strerror(rv));
+ exit(<span class="integer">1</span>);
+}
+
+<span class="predefined-type">char</span> *
+date(<span class="directive">void</span>)
+{
+ time_t now = time(&now);
+ <span class="keyword">struct</span> tm *info = localtime(&now);
+ <span class="predefined-type">char</span> *text = asctime(info);
+ text[strlen(text)-<span class="integer">1</span>] = <span class="char">'\0'</span>; <span class="comment">// remove '\n'</span>
+ <span class="keyword">return</span> (text);
+}
+
+<span class="predefined-type">int</span>
+server(<span class="directive">const</span> <span class="predefined-type">char</span> *url)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+
+ <span class="keyword">if</span> ((rv = nng_surveyor0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_surveyor0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_listen(sock, url, <span class="predefined-constant">NULL</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_listen</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">for</span> (;;) {
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">SERVER: SENDING DATE SURVEY REQUEST</span><span class="char">\n</span><span class="delimiter">"</span></span>);
+ <span class="keyword">if</span> ((rv = nng_send(sock, DATE, strlen(DATE) + <span class="integer">1</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_send</span><span class="delimiter">"</span></span>, rv);
+ }
+
+ <span class="keyword">for</span> (;;) {
+ <span class="predefined-type">char</span> *buf = <span class="predefined-constant">NULL</span>;
+ size_t sz;
+ rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC);
+ <span class="keyword">if</span> (rv == NNG_ETIMEDOUT) {
+ <span class="keyword">break</span>;
+ }
+ <span class="keyword">if</span> (rv != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_recv</span><span class="delimiter">"</span></span>, rv);
+ }
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">SERVER: RECEIVED </span><span class="char">\"</span><span class="content">%s</span><span class="char">\"</span><span class="content"> SURVEY RESPONSE</span><span class="char">\n</span><span class="delimiter">"</span></span>,
+ buf); <i class="conum" data-value="1"></i><b>(1)</b>
+ nng_free(buf, sz);
+ }
+
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">SERVER: SURVEY COMPLETE</span><span class="char">\n</span><span class="delimiter">"</span></span>);
+ }
+}
+
+<span class="predefined-type">int</span>
+client(<span class="directive">const</span> <span class="predefined-type">char</span> *url, <span class="directive">const</span> <span class="predefined-type">char</span> *name)
+{
+ nng_socket sock;
+ <span class="predefined-type">int</span> rv;
+
+ <span class="keyword">if</span> ((rv = nng_respondent0_open(&sock)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_respondent0_open</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">if</span> ((rv = nng_dial(sock, url, <span class="predefined-constant">NULL</span>, NNG_FLAG_NONBLOCK)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_dial</span><span class="delimiter">"</span></span>, rv);
+ }
+ <span class="keyword">for</span> (;;) {
+ <span class="predefined-type">char</span> *buf = <span class="predefined-constant">NULL</span>;
+ size_t sz;
+ <span class="keyword">if</span> ((rv = nng_recv(sock, &buf, &sz, NNG_FLAG_ALLOC)) == <span class="integer">0</span>) {
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">CLIENT (%s): RECEIVED </span><span class="char">\"</span><span class="content">%s</span><span class="char">\"</span><span class="content"> SURVEY REQUEST</span><span class="char">\n</span><span class="delimiter">"</span></span>,
+ name, buf); <i class="conum" data-value="1"></i><b>(1)</b>
+ nng_free(buf, sz);
+ <span class="predefined-type">char</span> *d = date();
+ printf(<span class="string"><span class="delimiter">"</span><span class="content">CLIENT (%s): SENDING DATE SURVEY RESPONSE</span><span class="char">\n</span><span class="delimiter">"</span></span>,
+ name);
+ <span class="keyword">if</span> ((rv = nng_send(sock, d, strlen(d) + <span class="integer">1</span>, <span class="integer">0</span>)) != <span class="integer">0</span>) {
+ fatal(<span class="string"><span class="delimiter">"</span><span class="content">nng_send</span><span class="delimiter">"</span></span>, rv);
+ }
+ }
+ }
+}
+
+<span class="predefined-type">int</span>
+main(<span class="directive">const</span> <span class="predefined-type">int</span> argc, <span class="directive">const</span> <span class="predefined-type">char</span> **argv)
+{
+ <span class="keyword">if</span> ((argc >= <span class="integer">2</span>) && (strcmp(SERVER, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (server(argv[<span class="integer">2</span>]));
+
+ <span class="keyword">if</span> ((argc >= <span class="integer">3</span>) && (strcmp(CLIENT, argv[<span class="integer">1</span>]) == <span class="integer">0</span>))
+ <span class="keyword">return</span> (client(argv[<span class="integer">2</span>], argv[<span class="integer">3</span>]));
+
+ fprintf(stderr, <span class="string"><span class="delimiter">"</span><span class="content">Usage: survey %s|%s <URL> <ARG> ...</span><span class="char">\n</span><span class="delimiter">"</span></span>,
+ SERVER, CLIENT);
+ <span class="keyword">return</span> <span class="integer">1</span>;
+}</code></pre>
+</div>
+</div>
+<div class="colist arabic">
+<table>
+<tr>
+<td><i class="conum" data-value="1"></i><b>1</b></td>
+<td>Blithely assumes message is ASCIIZ string. Real code should check it.</td>
+</tr>
+</table>
+</div>
+<div class="listingblock">
+<div class="title">Compilation</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">gcc survey.c -lnng -o survey</code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Execution</div>
+<div class="content">
+<pre class="CodeRay highlight"><code data-lang="bash">./survey server ipc:///tmp/survey.ipc & server=$!
+./survey client ipc:///tmp/survey.ipc client0 & client0=$!
+./survey client ipc:///tmp/survey.ipc client1 & client1=$!
+./survey client ipc:///tmp/survey.ipc client2 & client2=$!
+sleep 3 <i class="conum" data-value="1"></i><b>(1)</b>
+kill $server $client0 $client1 $client2</code></pre>
+</div>
+</div>
+<div class="colist arabic">
+<table>
+<tr>
+<td><i class="conum" data-value="1"></i><b>1</b></td>
+<td>The first survey times out with no responses because the clients aren’t connected yet.</td>
+</tr>
+</table>
+</div>
+<div class="listingblock">
+<div class="title">Output</div>
+<div class="content">
+<pre>SERVER: SENDING DATE SURVEY REQUEST
+SERVER: SURVEY COMPLETE
+SERVER: SENDING DATE SURVEY REQUEST
+CLIENT (client2): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client0): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client1): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client2): SENDING DATE SURVEY RESPONSE
+CLIENT (client1): SENDING DATE SURVEY RESPONSE
+CLIENT (client0): SENDING DATE SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:40 2018" SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:40 2018" SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:40 2018" SURVEY RESPONSE
+SERVER: SURVEY COMPLETE
+SERVER: SENDING DATE SURVEY REQUEST
+CLIENT (client2): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client2): SENDING DATE SURVEY RESPONSE
+CLIENT (client0): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client0): SENDING DATE SURVEY RESPONSE
+CLIENT (client1): RECEIVED "DATE" SURVEY REQUEST
+CLIENT (client1): SENDING DATE SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:41 2018" SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:41 2018" SURVEY RESPONSE
+SERVER: RECEIVED "Tue Jan 9 11:33:41 2018" SURVEY RESPONSE</pre>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2018-01-09 19:43:25 UTC
+</div>
+</div>
+</body>
+</html>
diff --git a/gettingstarted/pair.html b/gettingstarted/pair.html
index ef1809b..36cf4b1 100644
--- a/gettingstarted/pair.html
+++ b/gettingstarted/pair.html
@@ -542,6 +542,19 @@
</tr>
</table>
</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+If you want to use the experimental <a href="https://github.com/nanomsg/nng">nng</a>
+library instead, see the document <a href="nng/index.html">Getting Started with 'nng'</a>.
+</td>
+</tr>
+</table>
+</div>
</div>
</div>
<div class="sect1">
@@ -680,10 +693,11 @@
<div class="listingblock">
<div class="title">Output</div>
<div class="content">
-<pre>NODE1: SENDING DATE REQUEST DATE
-NODE0: RECEIVED DATE REQUEST
-NODE0: SENDING DATE Sat Sep 7 17:39:01 2013
-NODE1: RECEIVED DATE Sat Sep 7 17:39:01 2013</pre>
+<pre>node0: SENDING "node0"
+node1: SENDING "node1"
+node1: RECEIVED"node0"
+node0: SENDING "node0"
+node0: RECEIVED"node1"</pre>
</div>
</div>
</div>
@@ -691,7 +705,7 @@
</div>
<div id="footer">
<div id="footer-text">
-Last updated 2018-01-09 01:08:26 UTC
+Last updated 2018-01-09 14:16:57 UTC
</div>
</div>
</body>
diff --git a/gettingstarted/pipeline.html b/gettingstarted/pipeline.html
index 22133a8..f4b7175 100644
--- a/gettingstarted/pipeline.html
+++ b/gettingstarted/pipeline.html
@@ -542,6 +542,19 @@
</tr>
</table>
</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+If you want to use the experimental <a href="https://github.com/nanomsg/nng">nng</a>
+library instead, see the document <a href="nng/index.html">Getting Started with 'nng'</a>.
+</td>
+</tr>
+</table>
+</div>
</div>
</div>
<div class="sect1">
diff --git a/gettingstarted/pubsub.html b/gettingstarted/pubsub.html
index 365c76a..3503d2b 100644
--- a/gettingstarted/pubsub.html
+++ b/gettingstarted/pubsub.html
@@ -542,6 +542,19 @@
</tr>
</table>
</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+If you want to use the experimental <a href="https://github.com/nanomsg/nng">nng</a>
+library instead, see the document <a href="nng/index.html">Getting Started with 'nng'</a>.
+</td>
+</tr>
+</table>
+</div>
</div>
</div>
<div class="sect1">
@@ -663,7 +676,7 @@
<div class="listingblock">
<div class="title">Compilation</div>
<div class="content">
-<pre class="CodeRay highlight"><code data-lang="bash">gcc pubsub.c /usr/local/lib/libnanomsg.a -o pubsub</code></pre>
+<pre class="CodeRay highlight"><code data-lang="bash">gcc pubsub.c -lnanomsg -o pubsub</code></pre>
</div>
</div>
<div class="listingblock">
@@ -705,7 +718,7 @@
</div>
<div id="footer">
<div id="footer-text">
-Last updated 2018-01-09 01:08:26 UTC
+Last updated 2018-01-09 14:17:22 UTC
</div>
</div>
</body>
diff --git a/gettingstarted/reqrep.html b/gettingstarted/reqrep.html
index 0d4d489..0edbe21 100644
--- a/gettingstarted/reqrep.html
+++ b/gettingstarted/reqrep.html
@@ -542,6 +542,19 @@
</tr>
</table>
</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+If you want to use the experimental <a href="https://github.com/nanomsg/nng">nng</a>
+library instead, see the document <a href="nng/index.html">Getting Started with 'nng'</a>.
+</td>
+</tr>
+</table>
+</div>
</div>
</div>
<div class="sect1">
diff --git a/gettingstarted/survey.html b/gettingstarted/survey.html
index 7b62e04..f6fe192 100644
--- a/gettingstarted/survey.html
+++ b/gettingstarted/survey.html
@@ -542,6 +542,19 @@
</tr>
</table>
</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+If you want to use the experimental <a href="https://github.com/nanomsg/nng">nng</a>
+library instead, see the document <a href="nng/index.html">Getting Started with 'nng'</a>.
+</td>
+</tr>
+</table>
+</div>
</div>
</div>
<div class="sect1">
@@ -682,7 +695,7 @@
<div class="listingblock">
<div class="title">Compilation</div>
<div class="content">
-<pre class="CodeRay highlight"><code data-lang="bash">gcc survey.c -lnanmosg -o survey</code></pre>
+<pre class="CodeRay highlight"><code data-lang="bash">gcc survey.c -lnanomosg -o survey</code></pre>
</div>
</div>
<div class="listingblock">
@@ -727,7 +740,7 @@
</div>
<div id="footer">
<div id="footer-text">
-Last updated 2018-01-09 01:08:26 UTC
+Last updated 2018-01-09 19:41:41 UTC
</div>
</div>
</body>
