private static IWebProxy GetProxy()
{
if (webProxy == null)
{
// Uses HttpEnvironmentProxy class to mimic .NET Core behavior
HttpEnvironmentProxy.TryCreate(out webProxy);
}
return(webProxy);
}
private static IWebProxy GetProxy()
{
// Ensure TLS 1.2 is enabled
if (!ServicePointManager.SecurityProtocol.HasFlag(SecurityProtocolType.Tls12))
{
ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12;
}
if (webProxy == null)
{
// Uses HttpEnvironmentProxy class to mimic .NET Core behavior
HttpEnvironmentProxy.TryCreate(out webProxy);
}
return(webProxy);
}
public static bool TryCreate(out IWebProxy proxy)
{
// Get environment variables. Protocol specific take precedence over
// general all_*, lower case variable has precedence over upper case.
// Note that curl uses HTTPS_PROXY but not HTTP_PROXY.
Uri httpProxy = GetUriFromString(Environment.GetEnvironmentVariable(EnvHttpProxyLC));
if (httpProxy == null && Environment.GetEnvironmentVariable(EnvCGI) == null)
{
httpProxy = GetUriFromString(Environment.GetEnvironmentVariable(EnvHttpProxyUC));
}
Uri httpsProxy = GetUriFromString(Environment.GetEnvironmentVariable(EnvHttpsProxyLC)) ??
GetUriFromString(Environment.GetEnvironmentVariable(EnvHttpsProxyUC));
if (httpProxy == null || httpsProxy == null)
{
Uri allProxy = GetUriFromString(Environment.GetEnvironmentVariable(EnvAllProxyLC)) ??
GetUriFromString(Environment.GetEnvironmentVariable(EnvAllProxyUC));
if (httpProxy == null)
{
httpProxy = allProxy;
}
if (httpsProxy == null)
{
httpsProxy = allProxy;
}
}
// Do not instantiate if nothing is set.
// Caller may pick some other proxy type.
if (httpProxy == null && httpsProxy == null)
{
proxy = null;
return(false);
}
string noProxy = Environment.GetEnvironmentVariable(EnvNoProxyLC) ??
Environment.GetEnvironmentVariable(EnvNoProxyUC);
proxy = new HttpEnvironmentProxy(httpProxy, httpsProxy, noProxy);
return(true);
}