Mercurial > hg > nginx-quic
view src/os/win32/ngx_wsarecv.c @ 313:98f1a8028067
nginx-0.0.3-2004-04-13-19:08:48 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Tue, 13 Apr 2004 15:08:48 +0000 |
parents | a472bfb778b3 |
children | da8c5707af39 |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> ssize_t ngx_wsarecv(ngx_connection_t *c, u_char *buf, size_t size) { int rc; u_long bytes, flags; WSABUF wsabuf[1]; ngx_err_t err; ngx_event_t *rev; wsabuf[0].buf = (char *) buf; wsabuf[0].len = size; flags = 0; bytes = 0; rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, NULL, NULL); ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, "WSARecv: fd:%d rc:%d %d of %d", c->fd, rc, bytes, size); rev = c->read; if (rc == -1) { rev->ready = 0; err = ngx_socket_errno; if (err == WSAEWOULDBLOCK) { ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, "WSARecv() not ready"); return NGX_AGAIN; } rev->error = 1; ngx_connection_error(c, err, "WSARecv() failed"); return NGX_ERROR; } if (bytes < size) { rev->ready = 0; } if (bytes == 0) { rev->eof = 1; } return bytes; } ssize_t ngx_overlapped_wsarecv(ngx_connection_t *c, u_char *buf, size_t size) { int rc; u_long bytes, flags; WSABUF wsabuf[1]; ngx_err_t err; ngx_event_t *rev; LPWSAOVERLAPPED ovlp; rev = c->read; if (!rev->ready) { ngx_log_error(NGX_LOG_ALERT, c->log, 0, "second wsa post"); return NGX_AGAIN; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "rev->complete: %d", rev->complete); if (rev->complete) { rev->complete = 0; if (ngx_event_flags & NGX_USE_IOCP_EVENT) { if (rev->ovlp.error) { ngx_connection_error(c, rev->ovlp.error, "WSARecv() failed"); return NGX_ERROR; } return rev->available; } if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &rev->ovlp, &bytes, 0, NULL) == 0) { ngx_connection_error(c, ngx_socket_errno, "WSARecv() or WSAGetOverlappedResult() failed"); return NGX_ERROR; } return bytes; } ovlp = (LPWSAOVERLAPPED) &rev->ovlp; ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); wsabuf[0].buf = (char *) buf; wsabuf[0].len = size; flags = 0; bytes = 0; rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, ovlp, NULL); rev->complete = 0; ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, "WSARecv: fd:%d rc:%d %d of %d", c->fd, rc, bytes, size); if (rc == -1) { err = ngx_socket_errno; if (err == WSA_IO_PENDING) { rev->active = 1; return NGX_AGAIN; } rev->error = 1; ngx_connection_error(c, 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 complete */ rev->active = 1; return NGX_AGAIN; } if (bytes == 0) { rev->eof = 1; rev->ready = 0; } else { rev->ready = 1; } rev->active = 0; return bytes; } #if 0 /* DELELTE IT WHEN ABOVE FUNC WOULD BE TESTED */ 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; } #endif