webview js xhr post

gistfile1.txt

        
        var startScript = "var http = new XMLHttpRequest();"
        startScript += "var url = 'http://192.168.1.43:8080/liveControl';var params = 'action=LivePreviewCtl&control=true';http.open('POST', url, true);"
        startScript += "http.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');"
        startScript += "http.onreadystatechange = function() {"
        
        startScript += "http.onreadystatechange = function() {"
        startScript += "if(http.readyState == 4 && http.status == 204) {"
        startScript += "console.log(http.responseText);"
        startScript += "} else { console.log('error with preview', http.status); }"
        startScript += "http.send(params);"
        
        liveStreamWebView.evaluateJavaScript(startScript) { (reult, error) in
            print("started preview")
            DispatchQueue.main.asyncAfter(deadline: .now() + 0.25, execute: { 
                let request = URLRequest(url: LiveRestApi.livePreviewUrl)
                self.liveStreamWebView.load(request)
            })
        }