Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_send.c @ 8384:c61fcdc1b8e3 quic
UDP: extended datagram context.
Sometimes it is required to process datagram properties at higher level (i.e.
QUIC is interested in source address which may change and IP options). The
patch adds ngx_udp_dgram_t structure used to pass packet-related information
in c->udp.
author | Vladimir Homutov <vl@nginx.com> |
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date | Fri, 02 Apr 2021 18:58:19 +0300 |
parents | f01ab2dbcfdc |
children |
rev | line source |
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441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
417
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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11 |
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12 |
1682 | 13 ssize_t |
14 ngx_unix_send(ngx_connection_t *c, u_char *buf, size_t size) | |
417
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15 { |
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16 ssize_t n; |
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17 ngx_err_t err; |
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18 ngx_event_t *wev; |
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19 |
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20 wev = c->write; |
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21 |
469 | 22 #if (NGX_HAVE_KQUEUE) |
417
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23 |
587 | 24 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) { |
537 | 25 (void) ngx_connection_error(c, wev->kq_errno, |
26 "kevent() reported about an closed connection"); | |
417
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27 wev->error = 1; |
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28 return NGX_ERROR; |
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29 } |
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30 |
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31 #endif |
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32 |
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33 for ( ;; ) { |
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34 n = send(c->fd, buf, size, 0); |
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35 |
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36 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
6480 | 37 "send: fd:%d %z of %uz", c->fd, n, size); |
417
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38 |
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39 if (n > 0) { |
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40 if (n < (ssize_t) size) { |
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41 wev->ready = 0; |
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42 } |
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43 |
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44 c->sent += n; |
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45 |
417
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46 return n; |
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47 } |
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48 |
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49 err = ngx_socket_errno; |
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50 |
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51 if (n == 0) { |
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52 ngx_log_error(NGX_LOG_ALERT, c->log, err, "send() returned zero"); |
419
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53 wev->ready = 0; |
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54 return n; |
417
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55 } |
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56 |
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57 if (err == NGX_EAGAIN || err == NGX_EINTR) { |
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58 wev->ready = 0; |
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59 |
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60 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
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61 "send() not ready"); |
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62 |
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63 if (err == NGX_EAGAIN) { |
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64 return NGX_AGAIN; |
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65 } |
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66 |
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67 } else { |
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68 wev->error = 1; |
537 | 69 (void) ngx_connection_error(c, err, "send() failed"); |
417
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70 return NGX_ERROR; |
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71 } |
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72 } |
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73 } |