Mercurial > hg > nginx-quic
view src/os/win32/ngx_wsasend.c @ 5115:a29c574d61fa
Status: introduced the "ngx_stat_waiting" counter.
And corresponding variable $connections_waiting was added.
Previously, waiting connections were counted as the difference between
active connections and the sum of reading and writing connections.
That made it impossible to count more than one request in one connection
as reading or writing (as is the case for SPDY).
Also, we no longer count connections in handshake state as waiting.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Fri, 15 Mar 2013 20:00:49 +0000 |
parents | d620f497c50f |
children | 53eb1e67e432 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> ssize_t ngx_wsasend(ngx_connection_t *c, u_char *buf, size_t size) { int n; u_long sent; ngx_err_t err; ngx_event_t *wev; WSABUF wsabuf; wev = c->write; if (!wev->ready) { return NGX_AGAIN; } /* * WSABUF must be 4-byte aligned otherwise * WSASend() will return undocumented WSAEINVAL error. */ wsabuf.buf = (char *) buf; wsabuf.len = size; sent = 0; n = WSASend(c->fd, &wsabuf, 1, &sent, 0, NULL, NULL); ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, "WSASend: fd:%d, %d, %ul of %uz", c->fd, n, sent, size); if (n == 0) { if (sent < size) { wev->ready = 0; } c->sent += sent; return sent; } err = ngx_socket_errno; if (err == WSAEWOULDBLOCK) { ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, "WSASend() not ready"); return NGX_AGAIN; } wev->error = 1; ngx_connection_error(c, err, "WSASend() failed"); return NGX_ERROR; } ssize_t ngx_overlapped_wsasend(ngx_connection_t *c, u_char *buf, size_t size) { int n; u_long sent; ngx_err_t err; ngx_event_t *wev; LPWSAOVERLAPPED ovlp; WSABUF wsabuf; wev = c->write; if (!wev->ready) { return NGX_AGAIN; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "wev->complete: %d", wev->complete); if (!wev->complete) { /* post the overlapped WSASend() */ /* * WSABUFs must be 4-byte aligned otherwise * WSASend() will return undocumented WSAEINVAL error. */ wsabuf.buf = (char *) buf; wsabuf.len = size; sent = 0; ovlp = (LPWSAOVERLAPPED) &c->write->ovlp; ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); n = WSASend(c->fd, &wsabuf, 1, &sent, 0, ovlp, NULL); ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, "WSASend: fd:%d, %d, %ul of %uz", c->fd, n, sent, size); wev->complete = 0; if (n == 0) { 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 WSASend() was already complete */ wev->active = 1; return NGX_AGAIN; } if (sent < size) { wev->ready = 0; } c->sent += sent; return sent; } err = ngx_socket_errno; if (err == WSA_IO_PENDING) { ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, "WSASend() posted"); wev->active = 1; return NGX_AGAIN; } wev->error = 1; ngx_connection_error(c, err, "WSASend() failed"); return NGX_ERROR; } /* the overlapped WSASend() complete */ wev->complete = 0; wev->active = 0; if (ngx_event_flags & NGX_USE_IOCP_EVENT) { if (wev->ovlp.error) { ngx_connection_error(c, wev->ovlp.error, "WSASend() failed"); return NGX_ERROR; } sent = wev->available; } else { if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &wev->ovlp, &sent, 0, NULL) == 0) { ngx_connection_error(c, ngx_socket_errno, "WSASend() or WSAGetOverlappedResult() failed"); return NGX_ERROR; } } ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, "WSAGetOverlappedResult: fd:%d, %ul of %uz", c->fd, sent, size); if (sent < size) { wev->ready = 0; } c->sent += sent; return sent; }