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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
nxt_conn_io_t nxt_unix_conn_io = {
nxt_conn_io_connect,
nxt_conn_io_accept,
nxt_conn_io_read,
nxt_conn_io_recvbuf,
nxt_conn_io_recv,
nxt_conn_io_write,
nxt_event_conn_io_write_chunk,
#if (NXT_HAVE_LINUX_SENDFILE)
nxt_linux_event_conn_io_sendfile,
#elif (NXT_HAVE_FREEBSD_SENDFILE)
nxt_freebsd_event_conn_io_sendfile,
#elif (NXT_HAVE_MACOSX_SENDFILE)
nxt_macosx_event_conn_io_sendfile,
#elif (NXT_HAVE_SOLARIS_SENDFILEV)
nxt_solaris_event_conn_io_sendfilev,
#elif (NXT_HAVE_AIX_SEND_FILE)
nxt_aix_event_conn_io_send_file,
#elif (NXT_HAVE_HPUX_SENDFILE)
nxt_hpux_event_conn_io_sendfile,
#else
nxt_event_conn_io_sendbuf,
#endif
nxt_event_conn_io_writev,
nxt_event_conn_io_send,
nxt_conn_io_shutdown,
};
nxt_conn_t *
nxt_conn_create(nxt_mp_t *mp, nxt_task_t *task)
{
nxt_conn_t *c;
nxt_thread_t *thr;
c = nxt_mp_zget(mp, sizeof(nxt_conn_t));
if (nxt_slow_path(c == NULL)) {
return NULL;
}
c->mem_pool = mp;
c->socket.fd = -1;
c->socket.log = &c->log;
c->log = *task->log;
/* The while loop skips possible uint32_t overflow. */
while (c->log.ident == 0) {
c->log.ident = nxt_task_next_ident();
}
thr = nxt_thread();
thr->engine->connections++;
c->task.thread = thr;
c->task.log = &c->log;
c->task.ident = c->log.ident;
c->socket.task = &c->task;
c->read_timer.task = &c->task;
c->write_timer.task = &c->task;
c->io = thr->engine->event.io;
c->max_chunk = NXT_INT32_T_MAX;
c->sendfile = NXT_CONN_SENDFILE_UNSET;
c->socket.read_work_queue = &thr->engine->fast_work_queue;
c->socket.write_work_queue = &thr->engine->fast_work_queue;
nxt_conn_timer_init(&c->read_timer, c, c->socket.read_work_queue);
nxt_conn_timer_init(&c->write_timer, c, c->socket.write_work_queue);
nxt_log_debug(&c->log, "connections: %uD", thr->engine->connections);
return c;
}
void
nxt_conn_free(nxt_task_t *task, nxt_conn_t *c)
{
nxt_mp_t *mp;
task->thread->engine->connections--;
mp = c->mem_pool;
nxt_mp_free(mp, c);
nxt_mp_release(mp);
}
void
nxt_conn_io_shutdown(nxt_task_t *task, void *obj, void *data)
{
int ret;
nxt_conn_t *c;
static const struct linger linger_off = {
.l_onoff = 1,
.l_linger = 0,
};
c = obj;
nxt_debug(task, "event conn shutdown");
if (c->socket.timedout) {
/*
* Resetting of timed out connection on close
* releases kernel memory associated with socket.
* This also causes sending TCP/IP RST to a peer.
*/
ret = setsockopt(c->socket.fd, SOL_SOCKET, SO_LINGER, &linger_off,
sizeof(struct linger));
if (nxt_slow_path(ret != 0)) {
nxt_log(task, NXT_LOG_CRIT, "setsockopt(%d, SO_LINGER) failed %E",
c->socket.fd, nxt_socket_errno);
}
}
c->write_state->close_handler(task, c, data);
}
void
nxt_conn_timer(nxt_event_engine_t *engine, nxt_conn_t *c,
const nxt_conn_state_t *state, nxt_timer_t *timer)
{
nxt_msec_t value;
if (state->timer_value != NULL) {
value = state->timer_value(c, state->timer_data);
if (value != 0) {
timer->handler = state->timer_handler;
nxt_timer_add(engine, timer, value);
}
}
}
void
nxt_conn_work_queue_set(nxt_conn_t *c, nxt_work_queue_t *wq)
{
c->read_work_queue = wq;
c->write_work_queue = wq;
c->read_timer.work_queue = wq;
c->write_timer.work_queue = wq;
}
nxt_sockaddr_t *
nxt_conn_local_addr(nxt_task_t *task, nxt_conn_t *c)
{
int ret;
size_t size, length;
socklen_t socklen;
nxt_sockaddr_t *sa;
if (c->local != NULL) {
return c->local;
}
/* AF_UNIX should not get in here. */
switch (c->remote->u.sockaddr.sa_family) {
#if (NXT_INET6)
case AF_INET6:
socklen = sizeof(struct sockaddr_in6);
length = NXT_INET6_ADDR_STR_LEN;
size = offsetof(nxt_sockaddr_t, u) + socklen + length;
break;
#endif
case AF_INET:
default:
socklen = sizeof(struct sockaddr_in);
length = NXT_INET_ADDR_STR_LEN;
size = offsetof(nxt_sockaddr_t, u) + socklen + length;
break;
}
sa = nxt_mp_get(c->mem_pool, size);
if (nxt_slow_path(sa == NULL)) {
return NULL;
}
sa->socklen = socklen;
sa->length = length;
ret = getsockname(c->socket.fd, &sa->u.sockaddr, &socklen);
if (nxt_slow_path(ret != 0)) {
nxt_log(task, NXT_LOG_CRIT, "getsockname(%d) failed", c->socket.fd);
return NULL;
}
c->local = sa;
nxt_sockaddr_text(sa);
/*
* TODO: here we can adjust the end of non-freeable block
* in c->mem_pool to the end of actual sockaddr length.
*/
return sa;
}
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