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/*
* 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 "core/nng_impl.h"
/*
* Socket implementation.
*/
struct nng_socket {
int s_proto;
nni_mutex_t s_mx;
nni_msgqueue_t s_uwq; /* Upper write queue. */
nni_msgqueue_t s_urq; /* Upper read queue. */
/* uwq */
/* urq */
/* options */
/* pipes */
/* endpoints */
int s_besteffort; /* Best effort mode delivery. */
int s_senderr; /* Protocol state machine use. */
};
int
nng_socket_create(nng_socket_t *sockp, int proto)
{
return (NNG_EAGAIN); /* XXX: IMPLEMENT ME */
}
int
nng_socket_close(nng_socket_t sock)
{
nni_msgqueue_close(sock->s_urq);
/* XXX: drain this? */
nni_msgqueue_close(sock->s_uwq);
/* XXX: close endpoints - no new pipes made... */
/* XXX: protocol shutdown */
/* XXX: close remaining pipes */
/* XXX: wait for workers to cease activity */
return (0);
}
int
nng_socket_sendmsg(nng_socket_t sock, nng_msg_t msg, int tmout)
{
int rv;
int besteffort;
/*
* Senderr is typically set by protocols when the state machine
* indicates that it is no longer valid to send a message. E.g.
* a REP socket with no REQ pending.
*/
nni_mutex_enter(sock->s_mx);
if ((rv = sock->s_senderr) != 0) {
nni_mutex_exit(sock->s_mx);
return (rv);
}
besteffort = sock->s_besteffort;
nni_mutex_exit(sock->s_mx);
#if 0
if (s.ops.p_sendhook != NULL) {
if ((rv = s.ops.p_sendhook(sock->s_proto, msg)) != 0) {
nng_msg_free(msg);
return (0);
}
}
#endif
if (besteffort) {
/*
* BestEffort mode -- if we cannot handle the message due
* to backpressure, we just throw it away, and don't complain.
*/
tmout = 0;
}
rv = nni_msgqueue_put(sock->s_uwq, msg, tmout);
if (besteffort && (rv == NNG_EAGAIN)) {
/* Pretend this worked... it didn't, but pretend. */
nng_msg_free(msg);
return (0);
}
return (rv);
}
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