From 536311a46b407902ca0ee52d504c327ec54cfdf1 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Thu, 4 Nov 2010 12:39:41 -0400
Subject: [PATCH] evhttp: Return 501 when we get an unrecognized method, not
 400.

---
 http-internal.h | 3 +++
 http.c          | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/http-internal.h b/http-internal.h
index b320e2d6..e32511e3 100644
--- a/http-internal.h
+++ b/http-internal.h
@@ -41,6 +41,9 @@ struct evbuffer;
 struct addrinfo;
 struct evhttp_request;
 
+/* Indicates an unknown request method. */
+#define _EVHTTP_REQ_UNKNOWN (1<<15)
+
 enum evhttp_connection_state {
 	EVCON_DISCONNECTED,	/**< not currently connected not trying either*/
 	EVCON_CONNECTING,	/**< tries to currently connect */
diff --git a/http.c b/http.c
index 3aeecc9d..57d832f0 100644
--- a/http.c
+++ b/http.c
@@ -1398,9 +1398,11 @@ evhttp_parse_request_line(struct evhttp_request *req, char *line)
 	} else if (strcmp(method, "PATCH") == 0) {
 		req->type = EVHTTP_REQ_PATCH;
 	} else {
+		req->type = _EVHTTP_REQ_UNKNOWN;
 		event_debug(("%s: bad method %s on request %p from %s",
 			__func__, method, req, req->remote_host));
-		return (-1);
+		/* No error yet; we'll give a better error later when
+		 * we see that req->type is unsupported. */
 	}
 
 	if (strcmp(version, "HTTP/1.0") == 0) {