Mercurial > hg > nginx
view src/os/win32/ngx_wsarecv.c @ 144:ef8c87afcfc5
nginx-0.0.1-2003-10-12-20:49:16 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Sun, 12 Oct 2003 16:49:16 +0000 |
parents | 6dfda4cf5200 |
children | 1bf718ce0dde |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> ssize_t ngx_wsarecv(ngx_connection_t *c, char *buf, size_t size) { int rc; u_int flags; size_t bytes; WSABUF wsabuf[1]; ngx_err_t err; ngx_event_t *rev; LPWSAOVERLAPPED ovlp; rev = c->read; bytes = 0; if ((ngx_event_flags & NGX_USE_AIO_EVENT) && rev->ready) { rev->ready = 0; /* the overlapped WSARecv() completed */ if (ngx_event_flags & NGX_USE_IOCP_EVENT) { if (rev->ovlp.error) { ngx_log_error(NGX_LOG_ERR, c->log, rev->ovlp.error, "WSARecv() failed"); return NGX_ERROR; } return rev->available; } if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &rev->ovlp, &bytes, 0, NULL) == 0) { err = ngx_socket_errno; ngx_log_error(NGX_LOG_CRIT, c->log, err, "WSARecv() or WSAGetOverlappedResult() failed"); return NGX_ERROR; } return bytes; } if (ngx_event_flags & NGX_USE_AIO_EVENT) { ovlp = (LPWSAOVERLAPPED) &c->read->ovlp; ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); } else { ovlp = NULL; } wsabuf[0].buf = buf; wsabuf[0].len = size; flags = 0; rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, ovlp, NULL); ngx_log_debug(c->log, "WSARecv: %d:%d" _ rc _ bytes); if (rc == -1) { err = ngx_socket_errno; if (err == WSA_IO_PENDING) { return NGX_AGAIN; } else if (err == WSAEWOULDBLOCK) { ngx_log_error(NGX_LOG_INFO, c->log, err, "WSARecv() EAGAIN"); return NGX_AGAIN; } else { ngx_log_error(NGX_LOG_CRIT, c->log, err, "WSARecv() failed"); return NGX_ERROR; } } if (ngx_event_flags & NGX_USE_IOCP_EVENT) { /* * If a socket was bound with I/O completion port * then GetQueuedCompletionStatus() would anyway return its status * despite that WSARecv() was already completed. */ return NGX_AGAIN; } return bytes; }