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annotate src/os/win32/ngx_wsarecv_chain.c @ 441:da8c5707af39

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nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
author Igor Sysoev <igor@sysoev.ru>
date Tue, 28 Sep 2004 08:34:51 +0000
parents 6bdf858bff8c
children 42d11f017717
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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1
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2 /*
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3 * Copyright (C) 2002-2004 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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12 ssize_t ngx_wsarecv_chain(ngx_connection_t *c, ngx_chain_t *chain)
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13 {
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14 int rc;
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15 u_char *prev;
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16 u_long bytes, flags;
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17 size_t size;
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18 WSABUF *wsabuf;
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19 ngx_err_t err;
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20 ngx_array_t io;
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21 ngx_event_t *rev;
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23 prev = NULL;
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24 wsabuf = NULL;
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25 flags = 0;
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26 size = 0;
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27 bytes = 0;
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29 ngx_init_array(io, c->pool, 10, sizeof(WSABUF), NGX_ERROR);
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30
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31 /* coalesce the neighbouring bufs */
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33 while (chain) {
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34 if (prev == chain->buf->last) {
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35 wsabuf->len += chain->buf->end - chain->buf->last;
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37 } else {
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38 ngx_test_null(wsabuf, ngx_push_array(&io), NGX_ERROR);
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39 wsabuf->buf = (char *) chain->buf->last;
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40 wsabuf->len = chain->buf->end - chain->buf->last;
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41 }
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42
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43 size += chain->buf->end - chain->buf->last;
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44 prev = chain->buf->end;
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45 chain = chain->next;
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46 }
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47
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48 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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49 "WSARecv: %d:%d", io.nelts, wsabuf->len);
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50
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52 rc = WSARecv(c->fd, io.elts, io.nelts, &bytes, &flags, NULL, NULL);
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53
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54 rev = c->read;
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56 if (rc == -1) {
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57 rev->ready = 0;
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58 err = ngx_socket_errno;
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59
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60 if (err == WSAEWOULDBLOCK) {
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61 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
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62 "WSARecv() not ready");
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63 return NGX_AGAIN;
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64 }
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65
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66 rev->error = 1;
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67 ngx_connection_error(c, err, "WSARecv() failed");
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68 return NGX_ERROR;
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69 }
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71 if (bytes < size) {
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72 rev->ready = 0;
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73 }
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74
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75 if (bytes == 0) {
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76 rev->eof = 1;
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77 }
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78
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79 return bytes;
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80 }