Mercurial > hg > nginx
annotate src/os/unix/ngx_recv.c @ 163:fb61ba77beba
nginx-0.0.1-2003-10-28-18:45:41 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 28 Oct 2003 15:45:41 +0000 |
parents | 5afee0074707 |
children | 1bf718ce0dde |
rev | line source |
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1 |
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 #include <ngx_event.h> |
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7 static int ngx_unix_recv_error(ngx_event_t *rev, ngx_err_t err); |
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10 #if (HAVE_KQUEUE) |
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11 |
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12 ssize_t ngx_unix_recv(ngx_connection_t *c, char *buf, size_t size) |
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13 { |
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14 ssize_t n; |
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15 ngx_event_t *rev; |
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16 |
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17 rev = c->read; |
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18 |
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19 if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) { |
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20 ngx_log_debug(c->log, "recv: eof:%d, avail:%d, err:%d" _ |
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21 rev->kq_eof _ rev->available _ rev->kq_errno); |
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23 if (rev->available == 0) { |
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24 if (rev->kq_eof) { |
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25 rev->ready = 0; |
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26 rev->eof = 1; |
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27 |
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28 if (rev->kq_errno) { |
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29 rev->error = 1; |
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30 ngx_set_socket_errno(rev->kq_errno); |
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31 return ngx_unix_recv_error(rev, rev->kq_errno); |
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32 } |
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33 |
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34 return 0; |
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35 |
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36 } else { |
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37 return NGX_AGAIN; |
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38 } |
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39 } |
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40 } |
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41 |
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42 do { |
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43 n = recv(c->fd, buf, size, 0); |
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44 |
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45 ngx_log_debug(c->log, "recv: %d:%d" _ n _ size); |
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46 |
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47 if (n >= 0) { |
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48 if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) { |
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49 rev->available -= n; |
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50 |
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51 /* |
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52 * rev->available can be negative here because some additional |
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53 * bytes can be received between kevent() and recv() |
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54 */ |
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55 |
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56 if (rev->available <= 0) { |
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57 if (!rev->kq_eof) { |
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58 rev->ready = 0; |
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59 } |
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60 |
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61 if (rev->available < 0) { |
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62 rev->available = 0; |
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63 } |
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64 } |
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65 |
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66 return n; |
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67 } |
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68 |
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69 if ((size_t) n < size) { |
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70 rev->ready = 0; |
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71 } |
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72 |
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73 if (n == 0) { |
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74 rev->eof = 1; |
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75 } |
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76 |
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77 return n; |
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78 } |
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79 |
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80 rev->ready = 0; |
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81 rev->error = 1; |
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82 n = ngx_unix_recv_error(rev, ngx_socket_errno); |
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83 |
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84 } while (n == NGX_EINTR); |
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85 |
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86 return n; |
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87 } |
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88 |
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89 #else /* ! NAVE_KQUEUE */ |
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90 |
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91 ssize_t ngx_unix_recv(ngx_connection_t *c, char *buf, size_t size) |
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92 { |
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93 ssize_t n; |
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94 ngx_event_t *rev; |
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95 |
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96 rev = c->read; |
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97 |
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98 do { |
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99 n = recv(c->fd, buf, size, 0); |
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100 |
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101 ngx_log_debug(c->log, "recv: %d:%d" _ n _ size); |
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102 |
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103 if (n >= 0) { |
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104 if ((size_t) n < size) { |
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105 rev->ready = 0; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
106 } |
163
fb61ba77beba
nginx-0.0.1-2003-10-28-18:45:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
148
diff
changeset
|
107 |
fb61ba77beba
nginx-0.0.1-2003-10-28-18:45:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
148
diff
changeset
|
108 if (n == 0) { |
fb61ba77beba
nginx-0.0.1-2003-10-28-18:45:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
148
diff
changeset
|
109 rev->eof = 1; |
fb61ba77beba
nginx-0.0.1-2003-10-28-18:45:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
148
diff
changeset
|
110 } |
fb61ba77beba
nginx-0.0.1-2003-10-28-18:45:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
148
diff
changeset
|
111 |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
112 return n; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
113 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
114 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
115 rev->ready = 0; |
163
fb61ba77beba
nginx-0.0.1-2003-10-28-18:45:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
148
diff
changeset
|
116 rev->error = 1; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
117 n = ngx_unix_recv_error(rev, ngx_socket_errno); |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
118 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
119 } while (n == NGX_EINTR); |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
120 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
121 return n; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
122 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
123 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
124 #endif /* NAVE_KQUEUE */ |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
125 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
126 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
127 static int ngx_unix_recv_error(ngx_event_t *rev, ngx_err_t err) |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
128 { |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
129 if (err == NGX_ECONNRESET && rev->ignore_econnreset) { |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
130 return 0; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
131 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
132 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
133 if (err == NGX_EAGAIN) { |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
134 ngx_log_error(NGX_LOG_INFO, rev->log, err, "recv() returned EAGAIN"); |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
135 return NGX_AGAIN; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
136 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
137 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
138 if (err == NGX_EINTR) { |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
139 ngx_log_error(NGX_LOG_INFO, rev->log, err, "recv() returned EINTR"); |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
140 return NGX_EINTR; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
141 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
142 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
143 ngx_log_error(NGX_LOG_ERR, rev->log, err, "recv() failed"); |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
144 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
145 return NGX_ERROR; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
93
diff
changeset
|
146 } |