| /* |
| Copyright (c) 2012-2013 Martin Sustrik All rights reserved. |
| Copyright (c) 2013 GoPivotal, Inc. All rights reserved. |
| Copyright 2016 Garrett D'Amore <garrett@damore.org> |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), |
| to deal in the Software without restriction, including without limitation |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| and/or sell copies of the Software, and to permit persons to whom |
| the Software is furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included |
| in all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| IN THE SOFTWARE. |
| */ |
| |
| #include "btcp.h" |
| #include "ctcp.h" |
| |
| #include "../../tcp.h" |
| |
| #include "../utils/port.h" |
| #include "../utils/iface.h" |
| |
| #include "../../utils/err.h" |
| #include "../../utils/alloc.h" |
| #include "../../utils/fast.h" |
| #include "../../utils/cont.h" |
| |
| #include <string.h> |
| |
| #if defined NN_HAVE_WINDOWS |
| #include "../../utils/win.h" |
| #else |
| #include <unistd.h> |
| #endif |
| |
| /* TCP-specific socket options. */ |
| |
| struct nn_tcp_optset { |
| struct nn_optset base; |
| int nodelay; |
| }; |
| |
| static void nn_tcp_optset_destroy (struct nn_optset *self); |
| static int nn_tcp_optset_setopt (struct nn_optset *self, int option, |
| const void *optval, size_t optvallen); |
| static int nn_tcp_optset_getopt (struct nn_optset *self, int option, |
| void *optval, size_t *optvallen); |
| static const struct nn_optset_vfptr nn_tcp_optset_vfptr = { |
| nn_tcp_optset_destroy, |
| nn_tcp_optset_setopt, |
| nn_tcp_optset_getopt |
| }; |
| |
| /* nn_transport interface. */ |
| static int nn_tcp_bind (struct nn_ep *ep); |
| static int nn_tcp_connect (struct nn_ep *ep); |
| static struct nn_optset *nn_tcp_optset (void); |
| |
| struct nn_transport nn_tcp = { |
| "tcp", |
| NN_TCP, |
| NULL, |
| NULL, |
| nn_tcp_bind, |
| nn_tcp_connect, |
| nn_tcp_optset, |
| }; |
| |
| static int nn_tcp_bind (struct nn_ep *ep) |
| { |
| return nn_btcp_create (ep); |
| } |
| |
| static int nn_tcp_connect (struct nn_ep *ep) |
| { |
| return nn_ctcp_create (ep); |
| } |
| |
| static struct nn_optset *nn_tcp_optset () |
| { |
| struct nn_tcp_optset *optset; |
| |
| optset = nn_alloc (sizeof (struct nn_tcp_optset), "optset (tcp)"); |
| alloc_assert (optset); |
| optset->base.vfptr = &nn_tcp_optset_vfptr; |
| |
| /* Default values for TCP socket options. */ |
| optset->nodelay = 0; |
| |
| return &optset->base; |
| } |
| |
| static void nn_tcp_optset_destroy (struct nn_optset *self) |
| { |
| struct nn_tcp_optset *optset; |
| |
| optset = nn_cont (self, struct nn_tcp_optset, base); |
| nn_free (optset); |
| } |
| |
| static int nn_tcp_optset_setopt (struct nn_optset *self, int option, |
| const void *optval, size_t optvallen) |
| { |
| struct nn_tcp_optset *optset; |
| int val; |
| |
| optset = nn_cont (self, struct nn_tcp_optset, base); |
| |
| /* At this point we assume that all options are of type int. */ |
| if (optvallen != sizeof (int)) |
| return -EINVAL; |
| val = *(int*) optval; |
| |
| switch (option) { |
| case NN_TCP_NODELAY: |
| if (nn_slow (val != 0 && val != 1)) |
| return -EINVAL; |
| optset->nodelay = val; |
| return 0; |
| default: |
| return -ENOPROTOOPT; |
| } |
| } |
| |
| static int nn_tcp_optset_getopt (struct nn_optset *self, int option, |
| void *optval, size_t *optvallen) |
| { |
| struct nn_tcp_optset *optset; |
| int intval; |
| |
| optset = nn_cont (self, struct nn_tcp_optset, base); |
| |
| switch (option) { |
| case NN_TCP_NODELAY: |
| intval = optset->nodelay; |
| break; |
| default: |
| return -ENOPROTOOPT; |
| } |
| memcpy (optval, &intval, |
| *optvallen < sizeof (int) ? *optvallen : sizeof (int)); |
| *optvallen = sizeof (int); |
| return 0; |
| } |
| |