commit 4bac945fc78121277d3735ffb22ba83a64b91c16 to fix issue #57 is wrong

[e9hack]

commit 4bac945 to fix #57 is wrong and proxytunnel is broken since this commit. SSL_set_tlsext_host_name() returns 1 on success or 0 in case of an error. Error codes like SSL_TLSEXT_ERR_OK, SSL_TLSEXT_ERR_ALERT_FATAL, SSL_TLSEXT_ERR_ALERT_WARNING and SSL_TLSEXT_ERR_NOACK are returned by the underlaying function SSL_CTX_set_tlsext_servername_callback() but not from SSL_set_tlsext_host_name() itself. My proposal to fix the issue is:

diff --git a/ptstream.c b/ptstream.c
index 7146862..101b2c8 100644
--- a/ptstream.c
+++ b/ptstream.c
@@ -341,13 +341,11 @@ int stream_enable_ssl(PTSTREAM *pts, const char *proxy_arg) {
 		message( "Set SNI hostname to %s\n", peer_host);
 	}
 	res = SSL_set_tlsext_host_name(ssl, peer_host);
-	if (res != SSL_TLSEXT_ERR_OK) {
-		unsigned long ssl_err = (res == SSL_TLSEXT_ERR_ALERT_WARNING ? SSL_TLSEXT_ERR_ALERT_WARNING : ERR_get_error());
-		message( "SSL_set_tlsext_host_name returned: %lu (0x%lx). "
-		         "TLS SNI error, giving up\n", ssl_err, ssl_err );
-		exit( 1 );
+	if (res != 1) {
+		message( "SSL_set_tlsext_host_name failed\n" );
+		goto fail;
 	}
-	
+
 	if ( SSL_connect (ssl) <= 0) {
         message( "SSL_connect failed\n");
         goto fail;

[68420948]

Fix released with proxytunnel v1.11.1