[fix] Do not use "Transfer-Encoding: chunked" header for proxied DELETE requests with no "Content-Length" header. Fixes #373.

Author: indexzero

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

@@ -253,7 +253,10 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
     }
 
     // Remove `Transfer-Encoding` header if client's protocol is HTTP/1.0
-    if (req.httpVersion === '1.0') {
+    // or if this is a DELETE request with no content-length header.
+    // See: https://github.com/nodejitsu/node-http-proxy/pull/373
+    if (req.httpVersion === '1.0' || (req.method === 'DELETE'
+      && !req.headers['content-length'])) {
       delete response.headers['transfer-encoding'];
     }