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comparison src/os/unix/ngx_udp_send.c @ 6436:8f038068f4bc

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Stream: UDP proxy.
author Roman Arutyunyan <arut@nginx.com>
date Wed, 20 Jan 2016 19:52:12 +0300
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6435:d1c791479bbb 6436:8f038068f4bc
1
2 /*
3 * Copyright (C) Igor Sysoev
4 * Copyright (C) Nginx, Inc.
5 */
6
7
8 #include <ngx_config.h>
9 #include <ngx_core.h>
10 #include <ngx_event.h>
11
12
13 ssize_t
14 ngx_udp_unix_send(ngx_connection_t *c, u_char *buf, size_t size)
15 {
16 ssize_t n;
17 ngx_err_t err;
18 ngx_event_t *wev;
19
20 wev = c->write;
21
22 for ( ;; ) {
23 n = sendto(c->fd, buf, size, 0, c->sockaddr, c->socklen);
24
25 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
26 "sendto: fd:%d %z of %uz to \"%V\"",
27 c->fd, n, size, &c->addr_text);
28
29 if (n >= 0) {
30 if ((size_t) n != size) {
31 wev->error = 1;
32 (void) ngx_connection_error(c, 0, "sendto() incomplete");
33 return NGX_ERROR;
34 }
35
36 c->sent += n;
37
38 return n;
39 }
40
41 err = ngx_socket_errno;
42
43 if (err == NGX_EAGAIN) {
44 wev->ready = 0;
45 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, NGX_EAGAIN,
46 "sendto() not ready");
47 return NGX_AGAIN;
48 }
49
50 if (err != NGX_EINTR) {
51 wev->error = 1;
52 (void) ngx_connection_error(c, err, "sendto() failed");
53 return NGX_ERROR;
54 }
55 }
56 }