Description:
------------
Currently a http request method name must only include
-, 0-9 and a-z A-Z. As it is tested against being "-" or HTTP_IS_CTYPE(alnum,.....).

But RPC over HTTP Protocol expects in an Echo Request the Method to be either RPC_IN_DATA or RPC_OUT_DATA which both include "_". This char is always recognized as illegal.

See Echo request description here:
http://msdn.microsoft.com/en-us/library/cc243982%28v=PROT.10%29.aspx

regards
Thilo

Reproduce code:
---------------
Reproduce with:
-----------------------------------
<?PHP

HttpRequest::methodRegister("RPC_IN_DATA");
-----------------------------------

Possible fix in http_request_method_api.c is:
-----------------------------------
--- http_request_method_api.c	2011-09-28 11:00:41.703593452 +0200
+++ http_request_method_api.c.new	2011-09-28 11:00:37.903593476 +0200
@@ -217,6 +217,10 @@
 				cncl[i] = '-';
 				break;
 			
+			case '_':
+				cncl[i] = '_';
+				break;
+			
 			default:
 				if (!HTTP_IS_CTYPE(alnum, method_name[i])) {
 					efree(cncl);
-----------------------------------


Expected result:
----------------
No php warning to be thrown:
"PHP Warning:  HttpRequest::methodRegister(): Request method contains illegal characters (RPC_OUT_DATA) in rpc.php on line 6"

Actual result:
--------------
This php warning is thrown:
"PHP Warning:  HttpRequest::methodRegister(): Request method contains illegal characters (RPC_OUT_DATA) in rpc.php on line 6"