annotate src/os/win32/ngx_wsarecv_chain.c @ 577:4d9ea73a627a release-0.3.10

nginx-0.3.10-RELEASE import *) Change: the "valid_referers" directive and the "$invalid_referer" variable were moved to the new ngx_http_referer_module from the ngx_http_rewrite_module. *) Change: the "$apache_bytes_sent" variable name was changed to "$body_bytes_sent". *) Feature: the "$sent_http_..." variables. *) Feature: the "if" directive supports the "=" and "!=" operations. *) Feature: the "proxy_pass" directive supports the HTTPS protocol. *) Feature: the "proxy_set_body" directive. *) Feature: the "post_action" directive. *) Feature: the ngx_http_empty_gif_module. *) Feature: the "worker_cpu_affinity" directive for Linux. *) Bugfix: the "rewrite" directive did not unescape URI part in redirect, now it is unescaped except the %00-%25 and %7F-%FF characters. *) Bugfix: nginx could not be built by the icc 9.0 compiler. *) Bugfix: if the SSI was enabled for zero size static file, then the chunked response was encoded incorrectly.
author Igor Sysoev <igor@sysoev.ru>
date Tue, 15 Nov 2005 13:30:52 +0000
parents d4ea69372b94
children d620f497c50f
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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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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 }