Description:
------------
Apache 2.x
PHP 5.2.11

'./configure' '--prefix=/usr/lib/php5' '--host=i686-pc-linux-gnu' '--mandir=/usr/lib/php5/man' '--infodir=/usr/lib/php5/info' '--sysconfdir=/etc' '--cache-file=./config.cache' '--with-pcre-regex=/usr' '--disable-cli' '--with-apxs2=/usr/sbin/apxs2' '--with-config-file-path=/etc/php/apache2-php5' '--with-config-file-scan-dir=/etc/php/apache2-php5/ext-active' '--without-pear' '--disable-bcmath' '--with-bz2' '--disable-calendar' '--with-curl' '--without-curlwrappers' '--disable-dbase' '--enable-exif' '--without-fbsql' '--without-fdftk' '--disable-filter' '--enable-ftp' '--with-gettext' '--without-gmp' '--disable-ipv6' '--without-kerberos' '--enable-mbstring' '--with-mcrypt' '--with-mhash' '--without-msql' '--without-mssql' '--with-ncurses' '--with-openssl' '--with-openssl-dir=/usr' '--enable-pcntl' '--without-pgsql' '--without-pspell' '--without-recode' '--disable-shmop' '--without-snmp' '--enable-soap' '--enable-sockets' '--without-sybase' '--without-sybase-ct' '--disable-sysvmsg' '--disable-sysvsem' '--disable-sysvshm' '--without-tidy' '--disable-wddx' '--disable-xmlreader' '--disable-xmlwriter' '--with-xmlrpc' '--without-xsl' '--enable-zip' '--with-zlib' '--disable-debug' '--enable-dba' '--without-cdb' '--with-db4' '--disable-flatfile' '--with-gdbm' '--disable-inifile' '--without-qdbm' '--with-freetype-dir=/usr' '--with-t1lib=/usr' '--disable-gd-jis-conv' '--with-jpeg-dir=/usr' '--with-png-dir=/usr' '--without-xpm-dir' '--with-gd' '--with-imap' '--with-imap-ssl' '--with-ldap' '--without-ldap-sasl' '--with-mysql=/usr' '--with-mysql-sock=/var/run/mysqld/mysqld.sock' '--with-mysqli=/usr/bin/mysql_config' '--without-pdo-dblib' '--with-pdo-mysql=/usr' '--without-pdo-odbc' '--without-pdo-pgsql' '--without-pdo-sqlite' '--with-readline' '--without-libedit' '--without-mm' '--without-sqlite'

Reproduce code:
---------------
$SoapClient = new SoapClient(
			$soap_url_.'?wsdl', 		
			array(
					'location' 			=> $soap_url_,
					'cache_wsdl' 		=> WSDL_CACHE_NONE,
					'user_agent'		=> __FUNCTION__,
					'trace'				=> 1,
					'exceptions' 		=> 1,
					'allow_self_signed' => 1,
				
					'proxy_host' 		=> $proxy_host,
					'proxy_login'    	=> $proxy_user,
					'proxy_password' 	=> $proxy_pass,
					'proxy_port' 		=> (int)$proxy_port
			)		
		);

Expected result:
----------------
I expect everything to go smooth and fetch the WSDL file contents. I tested the proxy manually on the https wsdl resource and it works.

Actual result:
--------------
Warning: SoapClient::SoapClient() [soapclient.soapclient]: SSL operation failed with code 1. OpenSSL Error messages: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol in /var/www/vhosts/site/connect-soap.php on line 138

Warning: SoapClient::SoapClient(https://secure.site.com/api/soap.php?wsdl) [soapclient.soapclient]: failed to open stream: Cannot connect to HTTPS server through proxy in /var/www/vhosts/site/connect-soap.php on line 138

Warning: SoapClient::SoapClient() [soapclient.soapclient]: I/O warning : failed to load external entity "https://secure.site.com/api/soap.php?wsdl" in /var/www/vhosts/site/connect-soap.php on line 138