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port "liveness" checks and a couple of other things from the 4.3 branch.

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Liveness checks are used to validate persistent socket connects when they
are re-used.
This commit is contained in:
Wez Furlong 2003-11-27 17:39:01 +00:00
parent 43698d6dbb
commit 3ee72aa5be
3 changed files with 33 additions and 10 deletions
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4
main/php_streams.h
View File

@ -358,6 +358,10 @@ PHPAPI int _php_stream_truncate_set_size(php_stream *stream, size_t newsize TSRM
#define PHP_STREAM_OPTION_META_DATA_API 11 /* ptrparam is a zval* to which to add meta data information */
#define php_stream_populate_meta_data(stream, zv) (_php_stream_set_option((stream), PHP_STREAM_OPTION_META_DATA_API, 0, zv TSRMLS_CC) == PHP_STREAM_OPTION_RETURN_OK ? 1 : 0)
/* Check if the stream is still "live"; for sockets/pipes this means the socket
* is still connected; for files, this does not really have meaning */
#define PHP_STREAM_OPTION_CHECK_LIVENESS 12 /* no parameters */
#define PHP_STREAM_OPTION_RETURN_OK 0 /* option set OK */
#define PHP_STREAM_OPTION_RETURN_ERR -1 /* problem setting option */
#define PHP_STREAM_OPTION_RETURN_NOTIMPL -2 /* underlying stream does not implement; streams can handle it instead */

6
main/streams/transports.c
View File

@ -74,8 +74,10 @@ PHPAPI php_stream *_php_stream_xport_create(const char *name, long namelen, int
if (persistent_id) {
switch(php_stream_from_persistent_id(persistent_id, &stream TSRMLS_CC)) {
case PHP_STREAM_PERSISTENT_SUCCESS:
/* TODO: check if the socket is still live */
return stream;
if (PHP_STREAM_OPTION_RETURN_OK == php_stream_set_option(stream, PHP_STREAM_OPTION_CHECK_LIVENESS, 0, NULL)) {
return stream;
}
/* fall through */
case PHP_STREAM_PERSISTENT_FAILURE:
default:

33
main/streams/xp_socket.c
View File

@ -148,15 +148,9 @@ static int php_sockop_close(php_stream *stream, int close_handle TSRMLS_DC)
if (close_handle) {
if (sock->socket != -1) {
#ifdef PHP_WIN32
/* prevent more data from coming in */
#ifdef AF_UNIX
if (stream->ops != &php_stream_unix_socket_ops && stream->ops != &php_stream_unixdg_socket_ops) {
#endif
shutdown(sock->socket, SHUT_RD);
#ifdef AF_UNIX
}
#endif
shutdown(sock->socket, SHUT_RD);
/* try to make sure that the OS sends all data before we close the connection.
* Essentially, we are waiting for the socket to become writeable, which means
@ -174,6 +168,7 @@ static int php_sockop_close(php_stream *stream, int close_handle TSRMLS_DC)
n = select(sock->socket + 1, NULL, &wrfds, &efds, &timeout);
} while (n == -1 && php_socket_errno() == EINTR);
#endif
closesocket(sock->socket);
sock->socket = -1;
@ -205,6 +200,28 @@ static int php_sockop_set_option(php_stream *stream, int option, int value, void
php_stream_xport_param *xparam;
switch(option) {
case PHP_STREAM_OPTION_CHECK_LIVENESS:
{
fd_set rfds;
struct timeval tv = {0,0};
char buf;
int alive = 1;
if (sock->socket == -1) {
alive = 0;
} else {
FD_ZERO(&rfds);
FD_SET(sock->socket, &rfds);
if (select(sock->socket + 1, &rfds, NULL, NULL, &tv) > 0 && FD_ISSET(sock->socket, &rfds)) {
if (0 == recv(sock->socket, &buf, sizeof(buf), MSG_PEEK) && php_socket_errno() != EAGAIN) {
alive = 0;
}
}
}
return alive ? PHP_STREAM_OPTION_RETURN_OK : PHP_STREAM_OPTION_RETURN_ERR;
}
case PHP_STREAM_OPTION_BLOCKING:
oldmode = sock->is_blocked;