[fix] Set "content-length" header to "0" if it is not already set on DELETE requests. Fixes #338.

Author: indexzero

lib/node-http-proxy/http-proxy.js

@@ -126,6 +126,12 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
       reverseProxy,
       location;
 
+  // If this is a DELETE request then set the "content-length"
+  // header (if it is not already set)
+  if (req.method === 'DELETE') {
+    req.headers['content-length'] = req.headers['content-length'] || '0';
+  }
+
   //
   // Add common proxy headers to the request so that they can
   // be availible to the proxy target server. If the proxy is