/// <summary>
/// Creates a new NetworkSettings objects from the currently used settings.
/// </summary>
/// <returns></returns>
private NetworkSettings CurrentSettings()
{
NetworkSettings netSettings = new NetworkSettings(this.wiretapServer.Host, this.wiretapServer.Port.ToString(),
WebRequest.DefaultWebProxy != this.IEProxy, "", "");
if (netSettings.useCustomProxy)
{
netSettings.proxyHost = ((WebProxy)WebRequest.DefaultWebProxy).Address.Host;
netSettings.proxyPort = ((WebProxy)WebRequest.DefaultWebProxy).Address.Port.ToString();
}
return(netSettings);
}
/// <summary>
/// Uses the supplied network settings to perform a HEAD request on the wiretap server
/// home page. Doesn't affect the currently applied network settings.
/// </summary>
/// <param name="settings">The NetworkSettings to test.</param>
/// <returns>The error message if any setting or network error occurs, or String.Empty on success.</returns>
public string TestConnection(NetworkSettings settings)
{
proxyCredDialog.AlwaysDisplay = true;
if (!proxyCredDialog.SaveChecked)
{
proxyCredDialog.Password = "";
}
// store prev settings so we can revert after test
NetworkSettings prevNetSettings = CurrentSettings();
try
{
// apply new settings
LoadSettings(settings);
if (WebRequest.DefaultWebProxy != null)
{
WebRequest.DefaultWebProxy.Credentials = null; // force prompt
}
// do test
PerformWebRequest(WebRequest_TestConnection, null);
}
catch (Exception ex)
{
LoadSettings(prevNetSettings); // revert
if (ex is WebException && ((WebException)ex).Status == WebExceptionStatus.ProtocolError)
{
return(String.Format("HTTP {0}, {1}",
(int)((HttpWebResponse)((WebException)ex).Response).StatusCode,
((HttpWebResponse)((WebException)ex).Response).StatusDescription));
}
else
{
return(ex.Message);
}
}
LoadSettings(prevNetSettings); // revert
proxyCredDialog.AlwaysDisplay = false;
return(String.Empty); // no error message = success
}
/// <summary>
/// Apply the given network settings for use from now on.
/// </summary>
/// <remarks>Throws an exception if any settings are invalid.</remarks>
/// <param name="settings">The NetworkSettings to use.</param>
public void LoadSettings(NetworkSettings settings)
{
this.wiretapServer = new UriBuilder("http", settings.wiretapHost, settings.WiretapPortInt).Uri;
if (settings.useCustomProxy)
{
if (settings.proxyHost == "")
{
WebRequest.DefaultWebProxy = null; // force no proxy
}
else
{
WebRequest.DefaultWebProxy = new WebProxy(new UriBuilder("http", settings.proxyHost, settings.ProxyPortInt).Uri);
}
}
else
{
WebRequest.DefaultWebProxy = IEProxy;
}
}
