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