/// <summary>
/// Tries to create a proxy by reading values from <see cref="_configuration"/>.
/// </summary>
private IWebProxy GetWebProxyFromConfiguration()
{
string host;
bool isEnabled;
string isEnabledString = GetValueFromProxyConfiguration <string>(_configuration, ProxyConstants.IsEnabled);
if (!bool.TryParse(isEnabledString, out isEnabled) || !isEnabled)
{
return(null);
}
// Try to get Proxy from config.json
host = GetValueFromProxyConfiguration <string>(_configuration, ProxyConstants.Address);
string username = GetValueFromProxyConfiguration <string>(_configuration, ProxyConstants.Username);
string password = GetValueFromProxyConfiguration <string>(_configuration, ProxyConstants.Password);
if (!string.IsNullOrEmpty(host))
{
var proxy = new ApiPort.Proxy.WebProxy(host);
if (!string.IsNullOrEmpty(username) && !string.IsNullOrEmpty(password))
{
proxy.Credentials = new NetworkCredential(username, password);
}
return(proxy);
}
else
{
return(null);
}
}
/// <summary>
/// Gets the proxy from environment variables.
/// </summary>
private IWebProxy GetWebProxyFromEnvironment()
{
// Try reading from the environment variable http_proxy. This would be specified as http://<username>:<password>@proxy.com
var host = Environment.GetEnvironmentVariable(ProxyConstants.HttpProxy);
Uri uri;
if (!string.IsNullOrEmpty(host) &&
Uri.TryCreate(host, UriKind.Absolute, out uri))
{
var webProxy = new ApiPort.Proxy.WebProxy(uri.GetComponents(UriComponents.HttpRequestUrl, UriFormat.SafeUnescaped));
if (!string.IsNullOrEmpty(uri.UserInfo))
{
var credentials = uri.UserInfo.Split(':');
if (credentials.Length > 1)
{
webProxy.Credentials = new NetworkCredential(
userName: credentials[0],
password: credentials[1]
);
}
}
var noProxy = Environment.GetEnvironmentVariable(ProxyConstants.NoProxy);
if (!string.IsNullOrEmpty(noProxy))
{
// split comma-separated list of domains
webProxy.BypassList = noProxy.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
}
return(webProxy);
}
else
{
return(null);
}
}