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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
void
nxt_conn_sys_socket(nxt_task_t *task, void *obj, void *data)
{
nxt_conn_t *c;
nxt_work_handler_t handler;
c = obj;
if (nxt_conn_socket(task, c) == NXT_OK) {
c->socket.write_work_queue = c->write_work_queue;
handler = c->io->connect;
} else {
handler = c->write_state->error_handler;
}
nxt_work_queue_add(&task->thread->engine->connect_work_queue,
handler, task, c, data);
}
void
nxt_conn_io_connect(nxt_task_t *task, void *obj, void *data)
{
nxt_conn_t *c;
nxt_work_handler_t handler;
nxt_event_engine_t *engine;
const nxt_conn_state_t *state;
c = obj;
state = c->write_state;
switch (nxt_socket_connect(task, c->socket.fd, c->remote)) {
case NXT_OK:
c->socket.write_ready = 1;
handler = state->ready_handler;
break;
case NXT_AGAIN:
c->socket.write_handler = nxt_conn_connect_test;
c->socket.error_handler = state->error_handler;
engine = task->thread->engine;
nxt_conn_timer(engine, c, state, &c->write_timer);
nxt_fd_event_enable_write(engine, &c->socket);
return;
case NXT_DECLINED:
handler = state->close_handler;
break;
default: /* NXT_ERROR */
handler = state->error_handler;
break;
}
nxt_work_queue_add(c->write_work_queue, handler, task, c, data);
}
nxt_int_t
nxt_conn_socket(nxt_task_t *task, nxt_conn_t *c)
{
nxt_uint_t family;
nxt_socket_t s;
nxt_debug(task, "event conn socket");
family = c->remote->u.sockaddr.sa_family;
s = nxt_socket_create(task, family, c->remote->type, 0, NXT_NONBLOCK);
if (nxt_slow_path(s == -1)) {
return NXT_ERROR;
}
c->sendfile = 1;
#if (NXT_HAVE_UNIX_DOMAIN && NXT_SOLARIS)
if (family == AF_UNIX) {
/* Solaris AF_UNIX does not support sendfilev(). */
c->sendfile = 0;
}
#endif
c->socket.fd = s;
c->socket.task = task;
c->read_timer.task = task;
c->write_timer.task = task;
if (c->local != NULL) {
if (nxt_slow_path(nxt_socket_bind(task, s, c->local, 0) != NXT_OK)) {
nxt_socket_close(task, s);
return NXT_ERROR;
}
}
return NXT_OK;
}
void
nxt_conn_connect_test(nxt_task_t *task, void *obj, void *data)
{
int ret, err;
socklen_t len;
nxt_conn_t *c;
c = obj;
nxt_debug(task, "event connect test fd:%d", c->socket.fd);
nxt_fd_event_block_write(task->thread->engine, &c->socket);
if (c->write_state->timer_autoreset) {
nxt_timer_disable(task->thread->engine, &c->write_timer);
}
err = 0;
len = sizeof(int);
/*
* Linux and BSDs return 0 and store a pending error in the err argument;
* Solaris returns -1 and sets the errno.
*/
ret = getsockopt(c->socket.fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len);
if (nxt_slow_path(ret == -1)) {
err = nxt_errno;
}
if (err == 0) {
nxt_work_queue_add(c->write_work_queue, c->write_state->ready_handler,
task, c, data);
return;
}
c->socket.error = err;
nxt_log(task, nxt_socket_error_level(err), "connect(%d, %*s) failed %E",
c->socket.fd, (size_t) c->remote->length,
nxt_sockaddr_start(c->remote), err);
nxt_conn_connect_error(task, c, data);
}
void
nxt_conn_connect_error(nxt_task_t *task, void *obj, void *data)
{
nxt_conn_t *c;
nxt_work_handler_t handler;
const nxt_conn_state_t *state;
c = obj;
state = c->write_state;
switch (c->socket.error) {
case NXT_ECONNREFUSED:
#if (NXT_LINUX)
case NXT_EAGAIN:
/*
* Linux returns EAGAIN instead of ECONNREFUSED
* for UNIX sockets if a listen queue is full.
*/
#endif
handler = state->close_handler;
break;
default:
handler = state->error_handler;
break;
}
nxt_work_queue_add(c->write_work_queue, handler, task, c, data);
}
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