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이 문서에서는 PHP 중국어 웹사이트 매뉴얼 풀어 주다
(PHP 5 >= 5.1.0)
stream_socket_enable_crypto — Turns encryption on/off on an already connected socket
$stream
, bool $enable
[, int $crypto_type
[, resource $session_stream
]] )Enable or disable encryption on the stream.
Once the crypto settings are established, cryptography can be turned
on and off dynamically by passing TRUE
or FALSE
in the
enable
parameter.
stream
The stream resource.
enable
Enable/disable cryptography on the stream.
crypto_type
Setup encryption on the stream. Valid methods are
STREAM_CRYPTO_METHOD_SSLv2_CLIENT
STREAM_CRYPTO_METHOD_SSLv3_CLIENT
STREAM_CRYPTO_METHOD_SSLv23_CLIENT
STREAM_CRYPTO_METHOD_TLS_CLIENT
STREAM_CRYPTO_METHOD_SSLv2_SERVER
STREAM_CRYPTO_METHOD_SSLv3_SERVER
STREAM_CRYPTO_METHOD_SSLv23_SERVER
STREAM_CRYPTO_METHOD_TLS_SERVER
If omitted, the crypto_type
context option on
the stream's SSL context will be used instead.
session_stream
Seed the stream with settings from session_stream
.
Returns TRUE
on success, FALSE
if negotiation has failed or
0 if there isn't enough data and you should try again
(only for non-blocking sockets).
版本 | 说明 |
---|---|
5.6.0 |
The crypto_type is now optional.
|
Example #1 stream_socket_enable_crypto() example
<?php
$fp = stream_socket_client ( "tcp://myproto.example.com:31337" , $errno , $errstr , 30 );
if (! $fp ) {
die( "Unable to connect: $errstr ( $errno )" );
}
stream_socket_enable_crypto ( $fp , true , STREAM_CRYPTO_METHOD_SSLv23_CLIENT );
fwrite ( $fp , "USER god\r\n" );
fwrite ( $fp , "PASS secret\r\n" );
stream_socket_enable_crypto ( $fp , false );
while ( $motd = fgets ( $fp )) {
echo $motd ;
}
fclose ( $fp );
?>
以上例程的输出类似于:
[#1] bobe at webnaute dot net [2015-03-20 16:54:34]
There is an error in the description of the third argument:
"If omitted, the crypto_type context option on the stream's SSL context will be used instead."
The name of the context option is "crypto_method", NOT "crypto_type" which is just the name of the argument.
[#2] mark at kinoko dot fr [2007-11-06 11:00:10]
Just to avoid letting you search everywhere why your code doesn't work when using this function to enable crypto as a server, and when using TLS, you have to put the certificate in the "ssl" context, even if you start a TLS, SSLv3, etc.. server.
I had some troubles because of that...
[#3] tigger (AT) tiggerswelt d0t net [2007-05-30 03:15:55]
As already mentioned above:
stream_socket_enable_crypto is likely to fail/return zero if the socket is in non-blocking mode.
You may either wait some seconds until all neccessary data has arrived or switch temporary to blocking mode:
<?PHP
stream_set_blocking ($fd, true);
stream_socket_enable_crypto ($fd, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
stream_set_blocking ($fd, false);
?>
This works very fine for me ;-)