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comparison src/os/win32/ngx_wsarecv_chain.c @ 186:c1f3a3c7c5db

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nginx-0.0.1-2003-11-17-00:49:42 import
author Igor Sysoev <igor@sysoev.ru>
date Sun, 16 Nov 2003 21:49:42 +0000
parents
children 0ba4821f4460
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185:d5f50cefc322 186:c1f3a3c7c5db
1
2 #include <ngx_config.h>
3 #include <ngx_core.h>
4 #include <ngx_event.h>
5
6
7 ssize_t ngx_wsarecv_chain(ngx_connection_t *c, ngx_chain_t *chain)
8 {
9 int rc;
10 char *prev;
11 u_int flags;
12 size_t bytes, size;
13 WSABUF *wsabuf;
14 ngx_err_t err;
15 ngx_array_t io;
16 ngx_event_t *rev;
17
18 prev = NULL;
19 wsabuf = NULL;
20 flags = 0;
21 size = 0;
22 bytes = 0;
23
24 ngx_init_array(io, c->pool, 10, sizeof(WSABUF), NGX_ERROR);
25
26 /* coalesce the neighbouring hunks */
27
28 while (chain) {
29 if (prev == chain->hunk->last) {
30 wsabuf->len += chain->hunk->end - chain->hunk->last;
31
32 } else {
33 ngx_test_null(wsabuf, ngx_push_array(&io), NGX_ERROR);
34 wsabuf->buf = chain->hunk->last;
35 wsabuf->len = chain->hunk->end - chain->hunk->last;
36 }
37
38 size += chain->hunk->end - chain->hunk->last;
39 prev = chain->hunk->end;
40 chain = chain->next;
41 }
42
43 ngx_log_debug(c->log, "WSARecv: %d:%d" _ io.nelts _ wsabuf->len);
44
45 rc = WSARecv(c->fd, io.elts, io.nelts, &bytes, &flags, NULL, NULL);
46
47 rev = c->read;
48
49 if (rc == -1) {
50 rev->ready = 0;
51 err = ngx_socket_errno;
52
53 if (err == WSAEWOULDBLOCK) {
54 ngx_log_error(NGX_LOG_INFO, c->log, err, "WSARecv() EAGAIN");
55 return NGX_AGAIN;
56 }
57
58 rev->error = 1;
59 ngx_log_error(NGX_LOG_CRIT, c->log, err, "WSARecv() failed");
60 return NGX_ERROR;
61 }
62
63 if (bytes < size) {
64 rev->ready = 0;
65 }
66
67 if (bytes == 0) {
68 rev->eof = 1;
69 }
70
71 return bytes;
72 }