public async Task TestConnectSocks4ByDomainAsync()
{
using (var proxy = new Socks4ProxyListener()) {
proxy.Start(IPAddress.Loopback, 0);
var socks = new Socks4aClient(proxy.IPAddress.ToString(), proxy.Port);
Socket socket = null;
try {
socket = await socks.ConnectAsync("www.google.com", 80);
socket.Disconnect(false);
Assert.Fail("Sending a domain to a SOCKS4-only proxy server should have failed.");
} catch (ProxyProtocolException) {
// This is expected since this proxy does not support Socks4a
Assert.Pass($"{socks.ProxyHost} does not support Socks4a.");
} catch (TimeoutException) {
Assert.Inconclusive("Timed out.");
} catch (Exception ex) {
Assert.Fail(ex.Message);
} finally {
if (socket != null)
{
socket.Dispose();
}
}
}
}
public async Task TestConnectByIPv4Async()
{
using (var proxy = new Socks4aProxyListener()) {
proxy.Start(IPAddress.Loopback, 0);
var socks = new Socks4aClient(proxy.IPAddress.ToString(), proxy.Port);
var host = "74.125.197.99"; // ResolveIPv4 ("www.google.com");
Socket socket = null;
if (host == null)
{
return;
}
try {
socket = await socks.ConnectAsync(host, 80, ConnectTimeout);
socket.Disconnect(false);
} catch (TimeoutException) {
Assert.Inconclusive("Timed out.");
} catch (Exception ex) {
Assert.Fail(ex.Message);
} finally {
if (socket != null)
{
socket.Dispose();
}
}
}
}
public async void TestConnectByIPv4Async()
{
var socks = new Socks4aClient("100.39.36.100", 58288);
var host = "74.125.197.99"; // ResolveIPv4 ("www.google.com");
Socket socket = null;
if (host == null)
{
return;
}
try {
socket = await socks.ConnectAsync(host, 80, 10 * 1000);
socket.Disconnect(false);
} catch (TimeoutException) {
Assert.Inconclusive("Timed out.");
} catch (Exception ex) {
Assert.Fail(ex.Message);
} finally {
if (socket != null)
{
socket.Dispose();
}
}
}
public void TestArgumentExceptions()
{
var credentials = new NetworkCredential("user", "password");
var socks = new Socks4aClient("socks4.proxy.com", 0, credentials);
Assert.Throws <ArgumentNullException> (() => new Socks4aClient(null, 1080));
Assert.Throws <ArgumentException> (() => new Socks4aClient(string.Empty, 1080));
Assert.Throws <ArgumentOutOfRangeException> (() => new Socks4aClient(socks.ProxyHost, -1));
Assert.Throws <ArgumentNullException> (() => new Socks4aClient(socks.ProxyHost, 1080, null));
Assert.AreEqual(4, socks.SocksVersion);
Assert.AreEqual(1080, socks.ProxyPort);
Assert.AreEqual("socks4.proxy.com", socks.ProxyHost);
Assert.AreEqual(credentials, socks.ProxyCredentials);
Assert.Throws <ArgumentNullException> (() => socks.Connect(null, 80));
Assert.Throws <ArgumentNullException> (() => socks.Connect(null, 80, ConnectTimeout));
Assert.ThrowsAsync <ArgumentNullException> (async() => await socks.ConnectAsync(null, 80));
Assert.ThrowsAsync <ArgumentNullException> (async() => await socks.ConnectAsync(null, 80, ConnectTimeout));
Assert.Throws <ArgumentException> (() => socks.Connect(string.Empty, 80));
Assert.Throws <ArgumentException> (() => socks.Connect(string.Empty, 80, ConnectTimeout));
Assert.ThrowsAsync <ArgumentException> (async() => await socks.ConnectAsync(string.Empty, 80));
Assert.ThrowsAsync <ArgumentException> (async() => await socks.ConnectAsync(string.Empty, 80, ConnectTimeout));
Assert.Throws <ArgumentOutOfRangeException> (() => socks.Connect("www.google.com", 0));
Assert.Throws <ArgumentOutOfRangeException> (() => socks.Connect("www.google.com", 0, ConnectTimeout));
Assert.ThrowsAsync <ArgumentOutOfRangeException> (async() => await socks.ConnectAsync("www.google.com", 0));
Assert.ThrowsAsync <ArgumentOutOfRangeException> (async() => await socks.ConnectAsync("www.google.com", 0, ConnectTimeout));
Assert.Throws <ArgumentOutOfRangeException> (() => socks.Connect("www.google.com", 80, -ConnectTimeout));
Assert.ThrowsAsync <ArgumentOutOfRangeException> (async() => await socks.ConnectAsync("www.google.com", 80, -ConnectTimeout));
}
public async Task TestTimeoutException()
{
using (var proxy = new Socks4aProxyListener()) {
proxy.Start(IPAddress.Loopback, 0);
var socks = new Socks4aClient(proxy.IPAddress.ToString(), proxy.Port);
Stream stream = null;
try {
stream = await socks.ConnectAsync("example.com", 25, 1000);
} catch (TimeoutException) {
Assert.Pass();
} catch (Exception ex) {
Assert.Fail(ex.Message);
} finally {
stream?.Dispose();
}
}
}
public async Task TestConnectByDomainAsync()
{
using (var proxy = new Socks4aProxyListener()) {
proxy.Start(IPAddress.Loopback, 0);
var socks = new Socks4aClient(proxy.IPAddress.ToString(), proxy.Port);
Stream socket = null;
try {
socket = await socks.ConnectAsync("www.google.com", 80, ConnectTimeout);
} catch (TimeoutException) {
Assert.Inconclusive("Timed out.");
} catch (Exception ex) {
Assert.Fail(ex.Message);
} finally {
socket?.Dispose();
}
}
}
public async void TestConnectByDomainAsync()
{
// Note: this Socks4 proxy does not support the Socks4a protocol
var socks = new Socks4aClient("100.39.36.100", 58288);
Socket socket = null;
try {
socket = await socks.ConnectAsync("www.google.com", 80, 10 * 1000);
socket.Disconnect(false);
} catch (ProxyProtocolException) {
// This is expected since this proxy does not support Socks4a
Assert.Pass($"{socks.ProxyHost} does not support Socks4a, just as predicted.");
} catch (TimeoutException) {
Assert.Inconclusive("Timed out.");
} catch (Exception ex) {
Assert.Fail(ex.Message);
} finally {
if (socket != null)
{
socket.Dispose();
}
}
}