[fix] write connection header

Author: yawnt

Diff for: lib/caronte/passes/web-incoming.js

@@ -121,7 +121,7 @@ function stream(req, res, options) {
       var evnt = ev + pass.name.toLowerCase() + ':';
 
       options.ee.emit(evnt + 'begin', req, res); 
-      var val = pass(res, proxyRes); 
+      var val = pass(req, res, proxyRes); 
       options.ee.emit(evnt + 'end');
 
       return val;

Diff for: lib/caronte/passes/web-outgoing.js

@@ -9,14 +9,29 @@ var passes = exports;
  */
 
 [ // <--
-  
-  function writeHeaders(res, proxyRes) {
+
+  function setConnection(req, res, proxyRes) {
+    if (req.httpVersion === '1.0') {
+      if (req.headers.connection) {
+        proxyRes.headers.connection = req.headers.connection
+      } else {
+        proxyRes.headers.connection = 'close'
+      }
+    } else if (!proxyRes.headers.connection) {
+      if (req.headers.connection) { proxyRes.headers.connection = req.headers.connection }
+      else {
+        proxyRes.headers.connection = 'keep-alive'
+      }
+    }
+  },
+
+  function writeHeaders(req, res, proxyRes) {
     Object.keys(proxyRes.headers).forEach(function(key) {
       res.setHeader(key, proxyRes.headers[key]);
     });
   },
 
-  function writeStatusCode(res, proxyRes) {
+  function writeStatusCode(req, res, proxyRes) {
     res.writeHead(proxyRes.statusCode);
   }