| /* |
| Copyright (c) 2013 Martin Sustrik All rights reserved. |
| |
| 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. |
| */ |
| |
| #ifndef NN_STCP_INCLUDED |
| #define NN_STCP_INCLUDED |
| |
| #include "../../transport.h" |
| |
| #include "../../aio/fsm.h" |
| #include "../../aio/usock.h" |
| |
| #include "../utils/streamhdr.h" |
| |
| #include "../../utils/msg.h" |
| |
| /* This state machine handles TCP connection from the point where it is |
| established to the point when it is broken. */ |
| |
| #define NN_STCP_ERROR 1 |
| #define NN_STCP_STOPPED 2 |
| |
| struct nn_stcp { |
| |
| /* The state machine. */ |
| struct nn_fsm fsm; |
| int state; |
| |
| /* The underlying socket. */ |
| struct nn_usock *usock; |
| |
| /* Child state machine to do protocol header exchange. */ |
| struct nn_streamhdr streamhdr; |
| |
| /* The original owner of the underlying socket. */ |
| struct nn_fsm_owner usock_owner; |
| |
| /* Pipe connecting this TCP connection to the nanomsg core. */ |
| struct nn_pipebase pipebase; |
| |
| /* State of inbound state machine. */ |
| int instate; |
| |
| /* Buffer used to store the header of incoming message. */ |
| uint8_t inhdr [8]; |
| |
| /* Message being received at the moment. */ |
| struct nn_msg inmsg; |
| |
| /* State of the outbound state machine. */ |
| int outstate; |
| |
| /* Buffer used to store the header of outgoing message. */ |
| uint8_t outhdr [8]; |
| |
| /* Message being sent at the moment. */ |
| struct nn_msg outmsg; |
| |
| /* Event raised when the state machine ends. */ |
| struct nn_fsm_event done; |
| }; |
| |
| void nn_stcp_init (struct nn_stcp *self, int src, |
| struct nn_epbase *epbase, struct nn_fsm *owner); |
| void nn_stcp_term (struct nn_stcp *self); |
| |
| int nn_stcp_isidle (struct nn_stcp *self); |
| void nn_stcp_start (struct nn_stcp *self, struct nn_usock *usock); |
| void nn_stcp_stop (struct nn_stcp *self); |
| |
| #endif |
| |