Mercurial > hg > nginx
annotate src/os/unix/ngx_udp_recv.c @ 9320:cf73b65983c2 default tip
release-1.27.3 tag
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 13 Aug 2024 17:26:33 +0300 |
parents | 5ad379eab6fa |
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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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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> |
96
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12 |
1680 | 13 ssize_t |
1689 | 14 ngx_udp_unix_recv(ngx_connection_t *c, u_char *buf, size_t size) |
91
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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 *rev; |
91
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20 rev = c->read; |
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21 |
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22 do { |
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23 n = recv(c->fd, buf, size, 0); |
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24 |
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25 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
6480 | 26 "recv: fd:%d %z of %uz", c->fd, n, size); |
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27 |
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28 if (n >= 0) { |
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29 |
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30 #if (NGX_HAVE_KQUEUE) |
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31 |
455 | 32 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
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33 rev->available -= n; |
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34 |
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35 /* |
583 | 36 * rev->available may be negative here because some additional |
587 | 37 * bytes may be received between kevent() and recv() |
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38 */ |
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39 |
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40 if (rev->available <= 0) { |
1689 | 41 rev->ready = 0; |
605 | 42 rev->available = 0; |
43 } | |
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44 } |
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45 |
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46 #endif |
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47 |
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48 return n; |
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49 } |
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50 |
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51 err = ngx_socket_errno; |
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52 |
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53 if (err == NGX_EAGAIN || err == NGX_EINTR) { |
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54 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
253
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55 "recv() not ready"); |
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56 n = NGX_AGAIN; |
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57 |
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58 } else { |
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59 n = ngx_connection_error(c, err, "recv() failed"); |
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60 break; |
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61 } |
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62 |
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63 } while (err == NGX_EINTR); |
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64 |
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65 rev->ready = 0; |
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66 |
3642 | 67 if (n == NGX_ERROR) { |
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68 rev->error = 1; |
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69 } |
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70 |
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71 return n; |
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72 } |