Setting up WebSocket protocol

Hi, when I use browsermob-proxy all connections goes through https:// even WebSocket methods. For example: GET /echo HTTP/1.1 returns WebSocket-Location: wss://site.com/echo/123/websocket, after that initiates GET wss😕/site.com/echo/123/websocket with response code 101 switching protocols. But with browsermob-proxy initiates request GET https😕/site.com/echo/123/websocket

I’ve try to change protocol with addRequestFilter() but there is only http version of protocol:

proxy.addRequestFilter(new RequestFilter() {
   @Override
    public HttpResponse filterRequest(HttpRequest request, HttpMessageContents contents,    HttpMessageInfo messageInfo) {
       if (request.getUri().contains("echo/") && request.getUri().contains("/websocket")) {
           request.setProtocolVersion(new HttpVersion("WSS/1.1", true));
       }
       return null;
   }
});

There is no info about WebSocket and browsermob-proxy just this self-reply https://groups.google.com/forum/#!topic/browsermob-proxy/JzTHxje0qP4

I need proxy to monitor HTTP and WebSocket, there are a lot of autotests that I could make with it, but if I run tests with WebSocket it does not work at all.

Kind regards!

[ineverov]

@jekh Looks like littleproxy supports WebSockets already https://github.com/adamfisk/LittleProxy/releases/tag/littleproxy-1.1.0 Could somebody take a look at this issue?

[apreg]

Hi, I use PAC file // Start BrowserMobProxy server BrowserMobProxy proxyServer = new BrowserMobProxyServer(); proxyServer.setTrustAllServers(true); proxyServer.setRequestTimeout(120, TimeUnit.SECONDS); proxyServer.setConnectTimeout(120, TimeUnit.SECONDS); proxyServer.enableHarCaptureTypes(CaptureType.getAllContentCaptureTypes()); proxyServer.start(0);

// Get BrowserMobProxy server port for PAC file int proxyPort = proxyServer.getPort();

// Create PAC file to send WebSocket requests direct but other protocols throught BrowserMobProxy server String pacFunction = "function FindProxyForURL(url, host) { if (url.substring(0, 3) === “ws:” || url.substring(0, 4) === “wss:”) { " + “return “DIRECT”; } else { return “PROXY localhost:” + proxyPort + “”; } }”; String pacLocation = String.format(“target/pac/websocket-proxy-%s.pac”, proxyPort); writeStringToFile(new File(pacLocation), pacFunction, “UTF-8”);

// Set PAC file path to Selenium proxy Proxy seleniumProxy = new Proxy(); seleniumProxy.setProxyType(Proxy.ProxyType.PAC); seleniumProxy.setProxyAutoconfigUrl(String.format(System.getProperty(“base-dir”), pacLocation));

// Add Selenium proxy to DesiredCapabilities DesiredCapabilities desiredCapabilities = capabilities; desiredCapabilities.setCapability(CapabilityType.PROXY, seleniumProxy); desiredCapabilities.setCapability(CapabilityType.ACCEPT_SSL_CERTS, true);

// Start driver with desiredCapabilities WebDriver driver = new ChromeDriver(capabilities);

But it works only in Chrome and does not work in Firefox.

Thank you for this workaround. I had to tweak it a little bit since Chrome and Windows blocks the file:// schema usage for pac file url and I did not want to start a webserver to host the pac file. I found the solution here: https://superuser.com/questions/1405499/chrome-72-seems-to-no-longer-accept-proxy-pac-url --proxy-pac-url='data:application/x-javascript-config;base64,'$(base64 -w0 /path/to/local/proxy.pac) The code after this trick has been applied: // Create PAC file to send WebSocket requests direct but other protocols throught BrowserMobProxy server String pacFunction = "function FindProxyForURL(url, host) { if (url.substring(0, 3) === "ws:" || url.substring(0, 4) === "wss:") { " + "return "DIRECT"; } else { return "PROXY localhost:" + proxyPort + ""; } }"; seleniumProxy.setProxyAutoconfigUrl("data:application/x-javascript-config;base64," + Base64.getUrlEncoder().encodeToString(pacFunction.getBytes()));

As you can see I encoded the script not the location because that way it did not work for me. Note: Actually I used BrowserUp proxy but I think this should work with BrowserMob also.