annotate src/os/unix/ngx_freebsd_sendfile_chain.c @ 130:82d695e3d662 NGINX_0_3_12

nginx 0.3.12 *) Security: if nginx was built with the ngx_http_realip_module and the "satisfy_any on" directive was used, then access and authorization directives did not work. The ngx_http_realip_module was not built and is not built by default. *) Change: the "$time_gmt" variable name was changed to "$time_local". *) Change: the "proxy_header_buffer_size" and "fastcgi_header_buffer_size" directives was renamed to the "proxy_buffer_size" and "fastcgi_buffer_size" directives. *) Feature: the ngx_http_memcached_module. *) Feature: the "proxy_buffering" directive. *) Bugfix: the changes in accept mutex handling when the "rtsig" method was used; bug appeared in 0.3.0. *) Bugfix: if the client sent the "Transfer-Encoding: chunked" header line, then nginx returns the 411 error. *) Bugfix: if the "auth_basic" directive was inherited from the http level, then the realm in the "WWW-Authenticate" header line was without the "Basic realm" text. *) Bugfix: if the "combined" format was explicitly specified in the "access_log" directive, then the empty lines was written to the log; bug appeared in 0.3.8. *) Bugfix: nginx did not run on the sparc platform under any OS except Solaris. *) Bugfix: now it is not necessary to place space between the quoted string and closing bracket in the "if" directive.
author Igor Sysoev <http://sysoev.ru>
date Sat, 26 Nov 2005 00:00:00 +0300
parents e916a291e9aa
children 3656228c0b56
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10
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11
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12 /*
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13 * Although FreeBSD sendfile() allows to pass a header and a trailer,
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14 * it can not send a header with a part of the file in one packet until
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15 * FreeBSD 5.3. Besides, over the fast ethernet connection sendfile()
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16 * may send the partially filled packets, i.e. the 8 file pages may be sent
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17 * as the 11 full 1460-bytes packets, then one incomplete 324-bytes packet,
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18 * and then again the 11 full 1460-bytes packets.
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19 *
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20 * Threfore we use the TCP_NOPUSH option (similar to Linux's TCP_CORK)
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21 * to postpone the sending - it not only sends a header and the first part of
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22 * the file in one packet, but also sends the file pages in the full packets.
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23 *
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24 * But until FreeBSD 4.5 turning TCP_NOPUSH off does not flush a pending
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25 * data that less than MSS, so that data may be sent with 5 second delay.
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26 * So we do not use TCP_NOPUSH on FreeBSD prior to 4.5, although it can be used
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27 * for non-keepalive HTTP connections.
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28 */
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31 #define NGX_HEADERS 8
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32 #define NGX_TRAILERS 8
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35 ngx_chain_t *
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36 ngx_freebsd_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
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37 {
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38 int rc;
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39 u_char *prev;
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40 off_t size, send, prev_send, aligned, sent, fprev;
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41 size_t header_size, file_size;
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42 ngx_uint_t eintr, eagain, complete;
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43 ngx_err_t err;
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44 ngx_buf_t *file;
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45 ngx_array_t header, trailer;
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46 ngx_event_t *wev;
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47 ngx_chain_t *cl;
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48 struct sf_hdtr hdtr;
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49 struct iovec *iov, headers[NGX_HEADERS], trailers[NGX_TRAILERS];
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51 wev = c->write;
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52
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53 if (!wev->ready) {
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54 return in;
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55 }
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56
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57 #if (NGX_HAVE_KQUEUE)
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59 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
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60 && wev->pending_eof
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61 /* FreeBSD 5.x-6.x may erroneously report ETIMEDOUT */
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62 && wev->kq_errno != NGX_ETIMEDOUT)
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63 {
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64 (void) ngx_connection_error(c, wev->kq_errno,
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65 "kevent() reported about an closed connection");
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66 wev->error = 1;
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67 return NGX_CHAIN_ERROR;
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68 }
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69
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70 #endif
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71
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72 /* the maximum limit size is the maximum size_t value - the page size */
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73
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74 if (limit == 0 || limit > NGX_MAX_SIZE_T_VALUE - ngx_pagesize) {
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75 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize;
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76 }
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77
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78 send = 0;
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79 eagain = 0;
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80
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81 header.elts = headers;
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82 header.size = sizeof(struct iovec);
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83 header.nalloc = NGX_HEADERS;
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84 header.pool = c->pool;
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85
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86 trailer.elts = trailers;
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87 trailer.size = sizeof(struct iovec);
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88 trailer.nalloc = NGX_TRAILERS;
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89 trailer.pool = c->pool;
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90
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91 for ( ;; ) {
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92 file = NULL;
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93 file_size = 0;
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94 header_size = 0;
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95 eintr = 0;
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96 complete = 0;
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97 prev_send = send;
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98
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99 header.nelts = 0;
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100 trailer.nelts = 0;
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101
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102 /* create the header iovec and coalesce the neighbouring bufs */
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103
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104 prev = NULL;
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105 iov = NULL;
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106
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107 for (cl = in;
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108 cl && header.nelts < IOV_MAX && send < limit;
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109 cl = cl->next)
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110 {
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111 if (ngx_buf_special(cl->buf)) {
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112 continue;
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113 }
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114
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115 if (!ngx_buf_in_memory_only(cl->buf)) {
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116 break;
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117 }
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118
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119 size = cl->buf->last - cl->buf->pos;
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120
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121 if (send + size > limit) {
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122 size = limit - send;
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123 }
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124
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125 if (prev == cl->buf->pos) {
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126 iov->iov_len += (size_t) size;
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127
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128 } else {
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129 iov = ngx_array_push(&header);
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130 if (iov == NULL) {
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131 return NGX_CHAIN_ERROR;
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132 }
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133
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134 iov->iov_base = (void *) cl->buf->pos;
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135 iov->iov_len = (size_t) size;
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136 }
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137
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138 prev = cl->buf->pos + (size_t) size;
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139 header_size += (size_t) size;
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140 send += size;
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141 }
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142
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143
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144 if (cl && cl->buf->in_file && send < limit) {
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145 file = cl->buf;
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146
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diff changeset
147 /* coalesce the neighbouring file bufs */
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parents:
diff changeset
148
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parents:
diff changeset
149 do {
22
8b6db3bda591 nginx 0.1.11
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parents: 18
diff changeset
150 size = cl->buf->file_last - cl->buf->file_pos;
0
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parents:
diff changeset
151
f0b350454894 nginx 0.1.0
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parents:
diff changeset
152 if (send + size > limit) {
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parents:
diff changeset
153 size = limit - send;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
154
f0b350454894 nginx 0.1.0
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parents:
diff changeset
155 aligned = (cl->buf->file_pos + size + ngx_pagesize - 1)
f0b350454894 nginx 0.1.0
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parents:
diff changeset
156 & ~(ngx_pagesize - 1);
f0b350454894 nginx 0.1.0
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parents:
diff changeset
157
f0b350454894 nginx 0.1.0
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parents:
diff changeset
158 if (aligned <= cl->buf->file_last) {
f0b350454894 nginx 0.1.0
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parents:
diff changeset
159 size = aligned - cl->buf->file_pos;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
160 }
f0b350454894 nginx 0.1.0
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parents:
diff changeset
161 }
f0b350454894 nginx 0.1.0
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parents:
diff changeset
162
22
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parents: 18
diff changeset
163 file_size += (size_t) size;
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
164 send += size;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
165 fprev = cl->buf->file_pos + size;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
166 cl = cl->next;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
167
f0b350454894 nginx 0.1.0
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parents:
diff changeset
168 } while (cl
f0b350454894 nginx 0.1.0
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parents:
diff changeset
169 && cl->buf->in_file
f0b350454894 nginx 0.1.0
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parents:
diff changeset
170 && send < limit
f0b350454894 nginx 0.1.0
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parents:
diff changeset
171 && file->file->fd == cl->buf->file->fd
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
172 && fprev == cl->buf->file_pos);
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parents:
diff changeset
173 }
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parents:
diff changeset
174
4
4b2dafa26fe2 nginx 0.1.2
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parents: 0
diff changeset
175
0
f0b350454894 nginx 0.1.0
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parents:
diff changeset
176 if (file) {
4
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parents: 0
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177
0
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parents:
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178 /* create the tailer iovec and coalesce the neighbouring bufs */
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parents:
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179
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parents:
diff changeset
180 prev = NULL;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
181 iov = NULL;
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parents:
diff changeset
182
4
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parents: 0
diff changeset
183 while (cl && header.nelts < IOV_MAX && send < limit) {
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parents: 0
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184
0
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parents:
diff changeset
185 if (ngx_buf_special(cl->buf)) {
4
4b2dafa26fe2 nginx 0.1.2
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parents: 0
diff changeset
186 cl = cl->next;
0
f0b350454894 nginx 0.1.0
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parents:
diff changeset
187 continue;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
188 }
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parents:
diff changeset
189
f0b350454894 nginx 0.1.0
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parents:
diff changeset
190 if (!ngx_buf_in_memory_only(cl->buf)) {
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parents:
diff changeset
191 break;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
192 }
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parents:
diff changeset
193
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parents:
diff changeset
194 size = cl->buf->last - cl->buf->pos;
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parents:
diff changeset
195
f0b350454894 nginx 0.1.0
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parents:
diff changeset
196 if (send + size > limit) {
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parents:
diff changeset
197 size = limit - send;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
198 }
f0b350454894 nginx 0.1.0
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parents:
diff changeset
199
f0b350454894 nginx 0.1.0
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parents:
diff changeset
200 if (prev == cl->buf->pos) {
22
8b6db3bda591 nginx 0.1.11
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parents: 18
diff changeset
201 iov->iov_len += (size_t) size;
0
f0b350454894 nginx 0.1.0
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parents:
diff changeset
202
f0b350454894 nginx 0.1.0
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parents:
diff changeset
203 } else {
50
72eb30262aac nginx 0.1.25
Igor Sysoev <http://sysoev.ru>
parents: 32
diff changeset
204 iov = ngx_array_push(&trailer);
72eb30262aac nginx 0.1.25
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parents: 32
diff changeset
205 if (iov == NULL) {
0
f0b350454894 nginx 0.1.0
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parents:
diff changeset
206 return NGX_CHAIN_ERROR;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
207 }
f0b350454894 nginx 0.1.0
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parents:
diff changeset
208
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
209 iov->iov_base = (void *) cl->buf->pos;
22
8b6db3bda591 nginx 0.1.11
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parents: 18
diff changeset
210 iov->iov_len = (size_t) size;
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
211 }
f0b350454894 nginx 0.1.0
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parents:
diff changeset
212
22
8b6db3bda591 nginx 0.1.11
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parents: 18
diff changeset
213 prev = cl->buf->pos + (size_t) size;
0
f0b350454894 nginx 0.1.0
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parents:
diff changeset
214 send += size;
4
4b2dafa26fe2 nginx 0.1.2
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parents: 0
diff changeset
215 cl = cl->next;
0
f0b350454894 nginx 0.1.0
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parents:
diff changeset
216 }
f0b350454894 nginx 0.1.0
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parents:
diff changeset
217 }
f0b350454894 nginx 0.1.0
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parents:
diff changeset
218
f0b350454894 nginx 0.1.0
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parents:
diff changeset
219 if (file) {
f0b350454894 nginx 0.1.0
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parents:
diff changeset
220
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
221 if (ngx_freebsd_use_tcp_nopush
f0b350454894 nginx 0.1.0
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parents:
diff changeset
222 && c->tcp_nopush == NGX_TCP_NOPUSH_UNSET)
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
223 {
f0b350454894 nginx 0.1.0
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parents:
diff changeset
224 if (ngx_tcp_nopush(c->fd) == NGX_ERROR) {
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parents:
diff changeset
225 err = ngx_errno;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
226
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parents:
diff changeset
227 /*
28
7ca9bdc82b3f nginx 0.1.14
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parents: 26
diff changeset
228 * there is a tiny chance to be interrupted, however,
0
f0b350454894 nginx 0.1.0
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parents:
diff changeset
229 * we continue a processing without the TCP_NOPUSH
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
230 */
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parents:
diff changeset
231
f0b350454894 nginx 0.1.0
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parents:
diff changeset
232 if (err != NGX_EINTR) {
f0b350454894 nginx 0.1.0
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parents:
diff changeset
233 wev->error = 1;
86
962c43960644 nginx 0.1.43
Igor Sysoev <http://sysoev.ru>
parents: 50
diff changeset
234 (void) ngx_connection_error(c, err,
962c43960644 nginx 0.1.43
Igor Sysoev <http://sysoev.ru>
parents: 50
diff changeset
235 ngx_tcp_nopush_n " failed");
0
f0b350454894 nginx 0.1.0
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parents:
diff changeset
236 return NGX_CHAIN_ERROR;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
237 }
f0b350454894 nginx 0.1.0
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parents:
diff changeset
238
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
239 } else {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
240 c->tcp_nopush = NGX_TCP_NOPUSH_SET;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
241
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
242 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
243 "tcp_nopush");
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
244 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
245 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
246
f0b350454894 nginx 0.1.0
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parents:
diff changeset
247 hdtr.headers = (struct iovec *) header.elts;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
248 hdtr.hdr_cnt = header.nelts;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
249 hdtr.trailers = (struct iovec *) trailer.elts;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
250 hdtr.trl_cnt = trailer.nelts;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
251
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
252 /*
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
253 * the "nbytes bug" of the old sendfile() syscall:
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
254 * http://www.freebsd.org/cgi/query-pr.cgi?pr=33771
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
255 */
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
256
28
7ca9bdc82b3f nginx 0.1.14
Igor Sysoev <http://sysoev.ru>
parents: 26
diff changeset
257 if (!ngx_freebsd_sendfile_nbytes_bug) {
22
8b6db3bda591 nginx 0.1.11
Igor Sysoev <http://sysoev.ru>
parents: 18
diff changeset
258 header_size = 0;
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
259 }
f0b350454894 nginx 0.1.0
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parents:
diff changeset
260
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
261 sent = 0;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
262
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
263 rc = sendfile(file->file->fd, c->fd, file->file_pos,
22
8b6db3bda591 nginx 0.1.11
Igor Sysoev <http://sysoev.ru>
parents: 18
diff changeset
264 file_size + header_size, &hdtr, &sent, 0);
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
265
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
266 if (rc == -1) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
267 err = ngx_errno;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
268
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
269 if (err == NGX_EAGAIN || err == NGX_EINTR) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
270 if (err == NGX_EINTR) {
f0b350454894 nginx 0.1.0
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parents:
diff changeset
271 eintr = 1;
f0b350454894 nginx 0.1.0
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parents:
diff changeset
272
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
273 } else {
f0b350454894 nginx 0.1.0
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parents:
diff changeset
274 eagain = 1;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
275 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
276
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
277 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err,
22
8b6db3bda591 nginx 0.1.11
Igor Sysoev <http://sysoev.ru>
parents: 18
diff changeset
278 "sendfile() sent only %O bytes", sent);
0
f0b350454894 nginx 0.1.0
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parents:
diff changeset
279
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
280 } else {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
281 wev->error = 1;
86
962c43960644 nginx 0.1.43
Igor Sysoev <http://sysoev.ru>
parents: 50
diff changeset
282 (void) ngx_connection_error(c, err, "sendfile() failed");
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
283 return NGX_CHAIN_ERROR;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
284 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
285 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
286
32
da8c190bdaba nginx 0.1.16
Igor Sysoev <http://sysoev.ru>
parents: 28
diff changeset
287 /*
da8c190bdaba nginx 0.1.16
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parents: 28
diff changeset
288 * sendfile() in FreeBSD 3.x-4.x may return value >= 0
da8c190bdaba nginx 0.1.16
Igor Sysoev <http://sysoev.ru>
parents: 28
diff changeset
289 * on success, although only 0 is documented
da8c190bdaba nginx 0.1.16
Igor Sysoev <http://sysoev.ru>
parents: 28
diff changeset
290 */
da8c190bdaba nginx 0.1.16
Igor Sysoev <http://sysoev.ru>
parents: 28
diff changeset
291
da8c190bdaba nginx 0.1.16
Igor Sysoev <http://sysoev.ru>
parents: 28
diff changeset
292 if (rc >= 0 && sent == 0) {
4
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
293
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
294 /*
32
da8c190bdaba nginx 0.1.16
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parents: 28
diff changeset
295 * if rc is OK and sent equal to zero, then someone
da8c190bdaba nginx 0.1.16
Igor Sysoev <http://sysoev.ru>
parents: 28
diff changeset
296 * has truncated the file, so the offset became beyond
da8c190bdaba nginx 0.1.16
Igor Sysoev <http://sysoev.ru>
parents: 28
diff changeset
297 * the end of the file
4
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
298 */
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
299
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
300 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
301 "sendfile() reported that \"%s\" was truncated",
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
302 file->file->name.data);
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
303
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
304 return NGX_CHAIN_ERROR;
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
305 }
4b2dafa26fe2 nginx 0.1.2
Igor Sysoev <http://sysoev.ru>
parents: 0
diff changeset
306
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
307 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
10
46833bd150cb nginx 0.1.5
Igor Sysoev <http://sysoev.ru>
parents: 4
diff changeset
308 "sendfile: %d, @%O %O:%uz",
22
8b6db3bda591 nginx 0.1.11
Igor Sysoev <http://sysoev.ru>
parents: 18
diff changeset
309 rc, file->file_pos, sent, file_size + header_size);
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
310
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
311 } else {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
312 rc = writev(c->fd, header.elts, header.nelts);
f0b350454894 nginx 0.1.0
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parents:
diff changeset
313
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
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314 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
22
8b6db3bda591 nginx 0.1.11
Igor Sysoev <http://sysoev.ru>
parents: 18
diff changeset
315 "writev: %d of %uz", rc, header_size);
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
316
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
317 if (rc == -1) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
318 err = ngx_errno;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
319
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
320 if (err == NGX_EAGAIN || err == NGX_EINTR) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
321 if (err == NGX_EINTR) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
322 eintr = 1;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
323 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
324
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
325 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
326 "writev() not ready");
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
327
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
328 } else {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
329 wev->error = 1;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
330 ngx_connection_error(c, err, "writev() failed");
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
331 return NGX_CHAIN_ERROR;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
332 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
333 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
334
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
335 sent = rc > 0 ? rc : 0;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
336 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
337
22
8b6db3bda591 nginx 0.1.11
Igor Sysoev <http://sysoev.ru>
parents: 18
diff changeset
338 if (send - prev_send == sent) {
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
339 complete = 1;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
340 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
341
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
342 c->sent += sent;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
343
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
344 for (cl = in; cl; cl = cl->next) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
345
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
346 if (ngx_buf_special(cl->buf)) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
347 continue;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
348 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
349
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
350 if (sent == 0) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
351 break;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
352 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
353
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
354 size = ngx_buf_size(cl->buf);
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
355
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
356 if (sent >= size) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
357 sent -= size;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
358
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
359 if (ngx_buf_in_memory(cl->buf)) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
360 cl->buf->pos = cl->buf->last;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
361 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
362
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
363 if (cl->buf->in_file) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
364 cl->buf->file_pos = cl->buf->file_last;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
365 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
366
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
367 continue;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
368 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
369
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
370 if (ngx_buf_in_memory(cl->buf)) {
22
8b6db3bda591 nginx 0.1.11
Igor Sysoev <http://sysoev.ru>
parents: 18
diff changeset
371 cl->buf->pos += (size_t) sent;
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
372 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
373
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
374 if (cl->buf->in_file) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
375 cl->buf->file_pos += sent;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
376 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
377
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
378 break;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
379 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
380
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
381 if (eagain) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
382
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
383 /*
28
7ca9bdc82b3f nginx 0.1.14
Igor Sysoev <http://sysoev.ru>
parents: 26
diff changeset
384 * sendfile() may return EAGAIN, even if it has sent a whole file
7ca9bdc82b3f nginx 0.1.14
Igor Sysoev <http://sysoev.ru>
parents: 26
diff changeset
385 * part, it indicates that the successive sendfile() call would
0
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
386 * return EAGAIN right away and would not send anything.
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
387 * We use it as a hint.
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
388 */
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
389
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
390 wev->ready = 0;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
391 return cl;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
392 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
393
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
394 if (eintr) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
395 continue;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
396 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
397
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
398 if (!complete) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
399 wev->ready = 0;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
400 return cl;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
401 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
402
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
403 if (send >= limit || cl == NULL) {
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
404 return cl;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
405 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
406
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
407 in = cl;
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
408 }
f0b350454894 nginx 0.1.0
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
409 }