public bool ShouldProxyBeBypassed(HttpProxySettings proxySettings, HttpUri url)
{
//We are utilising the WebProxy implementation here to save us having to reimplement it. This way we use Microsofts implementation
var proxy = new WebProxy(proxySettings.Host + ":" + proxySettings.Port, proxySettings.BypassLocalAddress, proxySettings.BypassListAsArray);
return proxy.IsBypassed((Uri)url);
}
public IWebProxy GetWebProxy(HttpProxySettings proxySettings)
{
var proxy = _webProxyCache.Get(proxySettings.Key, () => CreateWebProxy(proxySettings), TimeSpan.FromMinutes(5));
_webProxyCache.ClearExpired();
return(proxy);
}
public IWebProxy GetWebProxy(HttpProxySettings proxySettings)
{
var proxy = _webProxyCache.Get(proxySettings.Key, () => CreateWebProxy(proxySettings), TimeSpan.FromMinutes(5));
_webProxyCache.ClearExpired();
return proxy;
}
private Uri GetProxyUri(HttpProxySettings proxySettings)
{
switch (proxySettings.Type)
{
case ProxyType.Http:
return(new Uri("http://" + proxySettings.Host + ":" + proxySettings.Port));
case ProxyType.Socks4:
return(new Uri("socks4://" + proxySettings.Host + ":" + proxySettings.Port));
case ProxyType.Socks5:
return(new Uri("socks5://" + proxySettings.Host + ":" + proxySettings.Port));
default:
return(null);
}
}
private IWebProxy CreateWebProxy(HttpProxySettings proxySettings)
{
var uri = GetProxyUri(proxySettings);
if (uri == null)
{
return(null);
}
if (proxySettings.Username.IsNotNullOrWhiteSpace() && proxySettings.Password.IsNotNullOrWhiteSpace())
{
return(new WebProxy(uri, proxySettings.BypassLocalAddress, proxySettings.BypassListAsArray, new NetworkCredential(proxySettings.Username, proxySettings.Password)));
}
else
{
return(new WebProxy(uri, proxySettings.BypassLocalAddress, proxySettings.BypassListAsArray));
}
}
private IWebProxy CreateWebProxy(HttpProxySettings proxySettings)
{
switch (proxySettings.Type)
{
case ProxyType.Http:
if (proxySettings.Username.IsNotNullOrWhiteSpace() && proxySettings.Password.IsNotNullOrWhiteSpace())
{
return new WebProxy(proxySettings.Host + ":" + proxySettings.Port, proxySettings.BypassLocalAddress, proxySettings.BypassListAsArray, new NetworkCredential(proxySettings.Username, proxySettings.Password));
}
else
{
return new WebProxy(proxySettings.Host + ":" + proxySettings.Port, proxySettings.BypassLocalAddress, proxySettings.BypassListAsArray);
}
case ProxyType.Socks4:
return new SocksWebProxy(new ProxyConfig(IPAddress.Loopback, GetNextFreePort(), GetProxyIpAddress(proxySettings.Host), proxySettings.Port, ProxyConfig.SocksVersion.Four, proxySettings.Username, proxySettings.Password), false);
case ProxyType.Socks5:
return new SocksWebProxy(new ProxyConfig(IPAddress.Loopback, GetNextFreePort(), GetProxyIpAddress(proxySettings.Host), proxySettings.Port, ProxyConfig.SocksVersion.Five, proxySettings.Username, proxySettings.Password), false);
}
return null;
}
public HttpProxySettings GetProxySettings(HttpRequest request)
{
if (!_configService.ProxyEnabled)
{
return null;
}
var proxySettings = new HttpProxySettings(_configService.ProxyType,
_configService.ProxyHostname,
_configService.ProxyPort,
_configService.ProxyBypassFilter,
_configService.ProxyBypassLocalAddresses,
_configService.ProxyUsername,
_configService.ProxyPassword);
if (ShouldProxyBeBypassed(proxySettings, request.Url))
{
return null;
}
return proxySettings;
}
private IWebProxy CreateWebProxy(HttpProxySettings proxySettings)
{
switch (proxySettings.Type)
{
case ProxyType.Http:
if (proxySettings.Username.IsNotNullOrWhiteSpace() && proxySettings.Password.IsNotNullOrWhiteSpace())
{
return(new WebProxy(proxySettings.Host + ":" + proxySettings.Port, proxySettings.BypassLocalAddress, proxySettings.BypassListAsArray, new BasicNetworkCredential(proxySettings.Username, proxySettings.Password)));
}
else
{
return(new WebProxy(proxySettings.Host + ":" + proxySettings.Port, proxySettings.BypassLocalAddress, proxySettings.BypassListAsArray));
}
case ProxyType.Socks4:
return(new SocksWebProxy(new ProxyConfig(IPAddress.Loopback, GetNextFreePort(), GetProxyIpAddress(proxySettings.Host), proxySettings.Port, ProxyConfig.SocksVersion.Four, proxySettings.Username, proxySettings.Password), false));
case ProxyType.Socks5:
return(new SocksWebProxy(new ProxyConfig(IPAddress.Loopback, GetNextFreePort(), GetProxyIpAddress(proxySettings.Host), proxySettings.Port, ProxyConfig.SocksVersion.Five, proxySettings.Username, proxySettings.Password), false));
}
return(null);
}
