Mercurial > hg > nginx-quic
annotate src/os/win32/ngx_wsarecv_chain.c @ 292:a472bfb778b3
nginx-0.0.3-2004-03-17-00:26:01 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 16 Mar 2004 21:26:01 +0000 |
parents | 7c7183b3ea8b |
children | 6bdf858bff8c |
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1 |
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 #include <ngx_event.h> |
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5 |
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6 |
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7 ssize_t ngx_wsarecv_chain(ngx_connection_t *c, ngx_chain_t *chain) |
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8 { |
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9 int rc; |
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10 u_char *prev; |
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11 u_long bytes, flags; |
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12 size_t size; |
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13 WSABUF *wsabuf; |
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14 ngx_err_t err; |
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15 ngx_array_t io; |
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16 ngx_event_t *rev; |
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17 |
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18 prev = NULL; |
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19 wsabuf = NULL; |
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20 flags = 0; |
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21 size = 0; |
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22 bytes = 0; |
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23 |
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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 |
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28 while (chain) { |
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29 if (prev == chain->hunk->last) { |
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30 wsabuf->len += chain->hunk->end - chain->hunk->last; |
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31 |
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32 } else { |
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33 ngx_test_null(wsabuf, ngx_push_array(&io), NGX_ERROR); |
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34 wsabuf->buf = (char *) 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; |
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39 prev = chain->hunk->end; |
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40 chain = chain->next; |
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41 } |
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42 |
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43 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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44 "WSARecv: %d:%d", io.nelts, wsabuf->len); |
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45 |
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46 |
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47 rc = WSARecv(c->fd, io.elts, io.nelts, &bytes, &flags, NULL, NULL); |
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48 |
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49 rev = c->read; |
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50 |
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51 if (rc == -1) { |
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52 rev->ready = 0; |
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53 err = ngx_socket_errno; |
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54 |
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55 if (err == WSAEWOULDBLOCK) { |
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56 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
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57 "WSARecv() not ready"); |
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58 return NGX_AGAIN; |
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59 } |
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60 |
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61 rev->error = 1; |
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62 ngx_connection_error(c, err, "WSARecv() failed"); |
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63 return NGX_ERROR; |
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64 } |
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65 |
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66 if (bytes < size) { |
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67 rev->ready = 0; |
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68 } |
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69 |
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70 if (bytes == 0) { |
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71 rev->eof = 1; |
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72 } |
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73 |
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74 return bytes; |
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75 } |