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Fixed small inconsistency in handling EOF among receive functions.

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Now all functions always drop the ready flag in this case.
This commit is contained in:
Valentin Bartenev 2016-04-08 16:39:49 +03:00
parent 8e7d8757c6
commit 900ef17c47
2 changed files with 41 additions and 42 deletions
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48
src/os/unix/ngx_readv_chain.c
View File

@ -106,7 +106,27 @@ ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain, off_t limit)
do {
n = readv(c->fd, (struct iovec *) vec.elts, vec.nelts);
if (n >= 0) {
if (n == 0) {
rev->ready = 0;
rev->eof = 1;
#if (NGX_HAVE_KQUEUE)
/*
* on FreeBSD readv() may return 0 on closed socket
* even if kqueue reported about available data
*/
if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
rev->available = 0;
}
#endif
return 0;
}
if (n > 0) {
#if (NGX_HAVE_KQUEUE)
@ -115,7 +135,7 @@ ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain, off_t limit)
/*
* rev->available may be negative here because some additional
* bytes may be received between kevent() and recv()
* bytes may be received between kevent() and readv()
*/
if (rev->available <= 0) {
@ -128,37 +148,15 @@ ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain, off_t limit)
}
}
if (n == 0) {
/*
* on FreeBSD recv() may return 0 on closed socket
* even if kqueue reported about available data
*/
#if 0
ngx_log_error(NGX_LOG_ALERT, c->log, 0,
"readv() returned 0 while kevent() reported "
"%d available bytes", rev->available);
#endif
rev->ready = 0;
rev->eof = 1;
rev->available = 0;
}
return n;
}
#endif /* NGX_HAVE_KQUEUE */
#endif
if (n < size && !(ngx_event_flags & NGX_USE_GREEDY_EVENT)) {
rev->ready = 0;
}
if (n == 0) {
rev->eof = 1;
}
return n;
}

35
src/os/unix/ngx_recv.c
View File

@ -54,7 +54,24 @@ ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size)
ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
"recv: fd:%d %z of %uz", c->fd, n, size);
if (n >= 0) {
if (n == 0) {
rev->ready = 0;
rev->eof = 1;
/*
* on FreeBSD recv() may return 0 on closed socket
* even if kqueue reported about available data
*/
if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
rev->available = 0;
}
return 0;
}
if (n > 0) {
if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
rev->available -= n;
@ -73,18 +90,6 @@ ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size)
}
}
if (n == 0) {
/*
* on FreeBSD recv() may return 0 on closed socket
* even if kqueue reported about available data
*/
rev->ready = 0;
rev->eof = 1;
rev->available = 0;
}
return n;
}
@ -94,10 +99,6 @@ ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size)
rev->ready = 0;
}
if (n == 0) {
rev->eof = 1;
}
return n;
}