Mercurial > hg > nginx
annotate src/os/win32/ngx_wsarecv.c @ 6791:cb4a4e9bba8e
Perl: fixed optimization in SSI command handler.
As the pointer to the first argument was tested instead of the argument
itself, array of arguments was always created, even if there were no
arguments. Fix is to test args[0] instead of args.
Found by Coverity (CID 1356862).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 01 Nov 2016 20:39:21 +0300 |
parents | 3d2d3e1cf427 |
children | efd71d49bde0 |
rev | line source |
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441
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1 |
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2 /* |
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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 |
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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 |
1680 | 13 ssize_t |
14 ngx_wsarecv(ngx_connection_t *c, u_char *buf, size_t size) | |
103
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15 { |
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16 int rc; |
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17 u_long bytes, flags; |
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18 WSABUF wsabuf[1]; |
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19 ngx_err_t err; |
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20 ngx_int_t n; |
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21 ngx_event_t *rev; |
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22 |
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23 wsabuf[0].buf = (char *) buf; |
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24 wsabuf[0].len = size; |
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25 flags = 0; |
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26 bytes = 0; |
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27 |
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28 rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, NULL, NULL); |
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29 |
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30 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, |
461 | 31 "WSARecv: fd:%d rc:%d %ul of %z", c->fd, rc, bytes, size); |
184
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32 |
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33 rev = c->read; |
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34 |
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35 if (rc == -1) { |
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36 rev->ready = 0; |
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37 err = ngx_socket_errno; |
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38 |
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39 if (err == WSAEWOULDBLOCK) { |
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40 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
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41 "WSARecv() not ready"); |
184
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42 return NGX_AGAIN; |
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43 } |
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44 |
2775 | 45 n = ngx_connection_error(c, err, "WSARecv() failed"); |
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46 |
3642 | 47 if (n == NGX_ERROR) { |
2775 | 48 rev->error = 1; |
49 } | |
50 | |
51 return n; | |
184
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52 } |
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53 |
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54 if (bytes < size) { |
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55 rev->ready = 0; |
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56 } |
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57 |
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58 if (bytes == 0) { |
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59 rev->eof = 1; |
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60 } |
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61 |
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62 return bytes; |
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63 } |
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64 |
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65 |
1680 | 66 ssize_t |
67 ngx_overlapped_wsarecv(ngx_connection_t *c, u_char *buf, size_t size) | |
184
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68 { |
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69 int rc; |
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70 u_long bytes, flags; |
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71 WSABUF wsabuf[1]; |
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72 ngx_err_t err; |
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73 ngx_int_t n; |
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74 ngx_event_t *rev; |
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75 LPWSAOVERLAPPED ovlp; |
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76 |
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77 rev = c->read; |
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78 |
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79 if (!rev->ready) { |
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80 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "second wsa post"); |
184
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81 return NGX_AGAIN; |
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82 } |
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83 |
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84 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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85 "rev->complete: %d", rev->complete); |
184
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86 |
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87 if (rev->complete) { |
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88 rev->complete = 0; |
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89 |
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90 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
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91 if (rev->ovlp.error) { |
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92 ngx_connection_error(c, rev->ovlp.error, "WSARecv() failed"); |
184
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93 return NGX_ERROR; |
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94 } |
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95 |
461 | 96 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
97 "WSARecv ovlp: fd:%d %ul of %z", | |
98 c->fd, rev->available, size); | |
99 | |
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100 return rev->available; |
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101 } |
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102 |
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103 if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &rev->ovlp, |
2776 | 104 &bytes, 0, NULL) |
105 == 0) | |
106 { | |
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107 ngx_connection_error(c, ngx_socket_errno, |
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108 "WSARecv() or WSAGetOverlappedResult() failed"); |
184
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109 return NGX_ERROR; |
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110 } |
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111 |
461 | 112 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
113 "WSARecv: fd:%d %ul of %z", c->fd, bytes, size); | |
114 | |
184
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115 return bytes; |
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116 } |
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117 |
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118 ovlp = (LPWSAOVERLAPPED) &rev->ovlp; |
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119 ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); |
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120 wsabuf[0].buf = (char *) buf; |
184
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nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
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121 wsabuf[0].len = size; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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122 flags = 0; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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123 bytes = 0; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
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144
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124 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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125 rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, ovlp, NULL); |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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126 |
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nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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127 rev->complete = 0; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
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128 |
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
184
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129 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, |
461 | 130 "WSARecv ovlp: fd:%d rc:%d %ul of %z", |
131 c->fd, rc, bytes, size); | |
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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132 |
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nginx-0.0.1-2003-11-14-10:20:34 import
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133 if (rc == -1) { |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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134 err = ngx_socket_errno; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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135 if (err == WSA_IO_PENDING) { |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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136 rev->active = 1; |
461 | 137 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
138 "WSARecv() posted"); | |
184
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nginx-0.0.1-2003-11-14-10:20:34 import
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139 return NGX_AGAIN; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
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140 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
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141 |
2775 | 142 n = ngx_connection_error(c, err, "WSARecv() failed"); |
143 | |
3642 | 144 if (n == NGX_ERROR) { |
2775 | 145 rev->error = 1; |
146 } | |
147 | |
148 return n; | |
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
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149 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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150 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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151 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
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152 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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153 /* |
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nginx-0.0.1-2003-11-14-10:20:34 import
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154 * if a socket was bound with I/O completion port |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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155 * then GetQueuedCompletionStatus() would anyway return its status |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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156 * despite that WSARecv() was already complete |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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157 */ |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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|
158 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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159 rev->active = 1; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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160 return NGX_AGAIN; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
161 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
162 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
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163 if (bytes == 0) { |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
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164 rev->eof = 1; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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165 rev->ready = 0; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
166 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
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167 } else { |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
168 rev->ready = 1; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
169 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
170 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
171 rev->active = 0; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
172 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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173 return bytes; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
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|
174 } |