proxy implementation i think that it should work

README.md

@@ -69,6 +69,4 @@ ws://localhost:8080/?target=ws://www.multiplayerpiano.com:443&origin=http://www.
 
 Query parameters may or may not be encoded, but querystring chars (`&` and `=`) must be encoded to escape them.
 
-## Issues
-
-If the `target` is missing or invalid, or if an error occurs when connecting to the remote host (such as if it responded with a 403), your connection is simply closed. Ideally, the proxy server would wait for the connection to the target to finish, before responding to the client with the same response of the target; however, I found this much too complicated to set up, so I just kept it simple.
+**Note:** If the `target` is missing or invalid, or if an error occurs when connecting to the remote host (such as if it responded with a 403), your connection is simply closed. Ideally, the proxy server would wait for the connection to the target to finish, before responding to the client with the same response of the target; however, I found this much too complicated to set up, so I just kept it simple.

index.js

@@ -1,54 +1,66 @@
-var WebSocket = require('ws');
-var {parse:parseQueryString} = require('query-string');
+var WebSocket = require("ws");
+var SocksProxyAgent = require("socks-proxy-agent");
+var { parse: parseQueryString } = require("query-string");
 var wss = new WebSocket.Server({
-	port: process.env.OPENSHIFT_NODEJS_PORT || process.env.PORT || 8080
+  port: process.env.OPENSHIFT_NODEJS_PORT || process.env.PORT || 8080
 });
 var conncount = 0;
-wss.on('connection', function (cws, req){
-	var number = conncount++;
-	console.log(`New connection #${number} from ${req.connection.remoteAddress} with ${req.url}`);
-	cws.on('close', function(){
-		console.log(`Closing connection #${number} from ${req.connection.remoteAddress}`);
-	});
+wss.on("connection", function(cws, req) {
+  var number = conncount++;
+  console.log(
+    `New connection #${number} from ${req.connection.remoteAddress} with ${req.url}`
+  );
+  cws.on("close", function() {
+    console.log(
+      `Closing connection #${number} from ${req.connection.remoteAddress}`
+    );
+  });
 
-	var querystring = req.url.substr(1);
-	if (!querystring) return cws.close();
-	var params = parseQueryString(querystring);
-	var target = params.target;
-	if (!target) return cws.close();
-	var headers = {};
-	for (let key in params) if (key != "target") headers[key] = params[key];
+  var querystring = req.url.substr(1);
+  if (!querystring) return cws.close();
+  var params = parseQueryString(querystring);
+  var target = params.target;
+  if (!target) return cws.close();
+  var headers = {};
+  for (let key in params) {
+    if (key != "target" && key != "agent") headers[key] = params[key];
+  }
 
-	try {
-		var tws = new WebSocket(target, {headers});
-	} catch(e) {
-		console.error(e);
-		cws.close();
-		return;
-	}
+  try {
+    var tws = new WebSocket(target, {
+      headers,
+      agent: params.agent
+        ? new SocksProxyAgent("socks://" + params.agent)
+        : undefined
+    });
+  } catch (e) {
+    console.error(e);
+    cws.close();
+    return;
+  }
 
-	// client to target
-	var messageBuffer = [];
-	tws.on('open', function(){
-		for (let message of messageBuffer) tws.send(message);
-		messageBuffer = undefined;
-	});
-	cws.on('message', function(message){
-		if (tws.readyState == WebSocket.OPEN) tws.send(message);
-		else if (messageBuffer) messageBuffer.push(message);
-	});
-	cws.on('close', function(){
-		tws.close();
-		messageBuffer = undefined;
-	});
-	cws.on('error', console.error);
+  // client to target
+  var messageBuffer = [];
+  tws.on("open", function() {
+    for (let message of messageBuffer) tws.send(message);
+    messageBuffer = undefined;
+  });
+  cws.on("message", function(message) {
+    if (tws.readyState == WebSocket.OPEN) tws.send(message);
+    else if (messageBuffer) messageBuffer.push(message);
+  });
+  cws.on("close", function() {
+    tws.close();
+    messageBuffer = undefined;
+  });
+  cws.on("error", console.error);
 
-	// target to client
-	tws.on('message', function(message){
-		if (cws.readyState == WebSocket.OPEN) cws.send(message);
-	});
-	tws.on('close', function(){
-		cws.close();
-	});
-	tws.on('error', console.error);
+  // target to client
+  tws.on("message", function(message) {
+    if (cws.readyState == WebSocket.OPEN) cws.send(message);
+  });
+  tws.on("close", function() {
+    cws.close();
+  });
+  tws.on("error", console.error);
 });

package-lock.json

@@ -2,6 +2,11 @@
   "requires": true,
   "lockfileVersion": 1,
   "dependencies": {
+    "async-limiter": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
+      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
+    },
     "decode-uri-component": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz",
@@ -22,9 +27,12 @@
       "integrity": "sha1-ucczDHBChi9rFC3CdLvMWGbONUY="
     },
     "ws": {
-      "version": "7.4.6",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
-      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A=="
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-6.0.0.tgz",
+      "integrity": "sha512-c2UlYcAZp1VS8AORtpq6y4RJIkJ9dQz18W32SpR/qXGfLDZ2jU4y4wKvvZwqbi7U6gxFQTeE+urMbXU/tsDy4w==",
+      "requires": {
+        "async-limiter": "~1.0.0"
+      }
     }
   }
 }

package.json

@@ -4,6 +4,6 @@
   },
   "dependencies": {
     "query-string": "^6.2.0",
-    "ws": "^7.4.6"
+    "ws": "^6.0.0"
   }
 }