annotate src/os/win32/ngx_wsarecv_chain.c @ 501:d4ea69372b94 release-0.1.25

nginx-0.1.25-RELEASE import *) Bugfix: nginx did run on Linux parisc. *) Feature: nginx now does not start under FreeBSD if the sysctl kern.ipc.somaxconn value is too big. *) Bugfix: if a request was internally redirected by the ngx_http_index_module module to the ngx_http_proxy_module or ngx_http_fastcgi_module modules, then the index file was not closed after request completion. *) Feature: the "proxy_pass" can be used in location with regular expression. *) Feature: the ngx_http_rewrite_filter_module module supports the condition like "if ($HTTP_USER_AGENT ~ MSIE)". *) Bugfix: nginx started too slow if the large number of addresses and text values were used in the "geo" directive. *) Change: a variable name must be declared as "$name" in the "geo" directive. The previous variant without "$" is still supported, but will be removed soon. *) Feature: the "%{VARIABLE}v" logging parameter. *) Feature: the "set $name value" directive. *) Bugfix: gcc 4.0 compatibility. *) Feature: the --with-openssl-opt=OPTIONS autoconfiguration directive.
author Igor Sysoev <igor@sysoev.ru>
date Sat, 19 Mar 2005 12:38:37 +0000
parents 42d11f017717
children 4d9ea73a627a
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1
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2 /*
444
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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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11
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12 #define NGX_WSABUFS 8
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14
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15 ssize_t
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16 ngx_wsarecv_chain(ngx_connection_t *c, ngx_chain_t *chain)
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17 {
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18 int rc;
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19 u_char *prev;
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20 u_long bytes, flags;
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21 size_t size;
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22 ngx_err_t err;
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23 ngx_array_t vec;
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24 ngx_event_t *rev;
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25 LPWSABUF wsabuf;
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26 WSABUF wsabufs[NGX_WSABUFS];
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28 prev = NULL;
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29 wsabuf = NULL;
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30 flags = 0;
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31 size = 0;
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32 bytes = 0;
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33
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34 vec.elts = wsabufs;
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35 vec.nelts = 0;
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36 vec.size = sizeof(WSABUF);
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37 vec.nalloc = NGX_WSABUFS;
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38 vec.pool = c->pool;
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39
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40 /* coalesce the neighbouring bufs */
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42 while (chain) {
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43 if (prev == chain->buf->last) {
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44 wsabuf->len += chain->buf->end - chain->buf->last;
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45
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46 } else {
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47 wsabuf = ngx_array_push(&vec);
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48 if (wsabuf == NULL) {
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49 return NGX_ERROR;
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50 }
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51
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52 wsabuf->buf = (char *) chain->buf->last;
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53 wsabuf->len = chain->buf->end - chain->buf->last;
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54 }
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55
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56 size += chain->buf->end - chain->buf->last;
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57 prev = chain->buf->end;
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58 chain = chain->next;
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59 }
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60
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61 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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62 "WSARecv: %d:%d", vec.nelts, wsabuf->len);
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63
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64
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65 rc = WSARecv(c->fd, vec.elts, vec.nelts, &bytes, &flags, NULL, NULL);
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67 rev = c->read;
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68
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69 if (rc == -1) {
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70 rev->ready = 0;
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71 err = ngx_socket_errno;
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72
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73 if (err == WSAEWOULDBLOCK) {
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74 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
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75 "WSARecv() not ready");
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76 return NGX_AGAIN;
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77 }
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78
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79 rev->error = 1;
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80 ngx_connection_error(c, err, "WSARecv() failed");
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81 return NGX_ERROR;
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82 }
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83
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84 if (bytes < size) {
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85 rev->ready = 0;
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86 }
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87
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88 if (bytes == 0) {
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89 rev->eof = 1;
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90 }
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91
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92 return bytes;
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93 }