public async Task Test_Bad_Service(EchoClient_Rfc_862.ProtocolType protocol)
{
var host = new HostName("localhost");
var serverOptions = new EchoServer_Rfc_862.ServerOptions()
{
LoggingLevel = EchoServer_Rfc_862.ServerOptions.Verbosity.None
};
var clientOptions = new EchoClient_Rfc_862.ClientOptions()
{
LoggingLevel = EchoClient_Rfc_862.ClientOptions.Verbosity.None
};
using (var server = new EchoServer_Rfc_862(serverOptions))
{
bool serverOk = await server.StartAsync();
if (!serverOk)
{
Infrastructure.Error($"unable to start server");
return;
}
var client = new EchoClient_Rfc_862(clientOptions);
var result = await client.WriteAsync(host, "79", protocol, "WontBeEchoed");
Infrastructure.IfTrueError(result.Succeeded != EchoClient_Rfc_862.EchoResult.State.Failed, "result.Succeeded ");
Infrastructure.IfTrueError(!String.IsNullOrEmpty(result.Value), "result.Value is not null");
// ConnectionRefused is for TCP
// ConnectionResetByPeer is for UDP
Infrastructure.IfTrueError(result.Error != SocketErrorStatus.ConnectionRefused && result.Error != SocketErrorStatus.ConnectionResetByPeer, $"result.Error is wrong ({result.Error})");
}
}
public static async Task <EchoClient_Rfc_862.EchoResult> RunTcpAsync()
{
// Hint: the using here means that the server is automatically closed
// after the code is done. If you don't do that, the server stays open.
using (var server = new EchoServer_Rfc_862())
{
await server.StartAsync();
var client = new EchoClient_Rfc_862();
// You only get the echo'd result from TCP with the final CloseAsync()
// But for UDP you get the returned packet.
var partialResult = await client.WriteAsync(
new Windows.Networking.HostName("localhost"),
server.Options.Service,
EchoClient_Rfc_862.ProtocolType.Tcp,
"Hello, echo server!");
// TODO: remove magic value?
// Wait for the echo to have worked. The server is right here, so the
// echo should be almost instantaneous.
await Task.Delay(100);
var completeResult = await client.CloseAsync(); // Close is essential for TCP.
return(completeResult);
}
}
public async Task Test_Echo_Good_Path_Udp()
{
using (var server = new EchoServer_Rfc_862())
{
var client = new EchoClient_Rfc_862();
await server.StartAsync();
var result1 = await client.WriteAsync(new HostName("localhost"), server.Options.Service, EchoClient_Rfc_862.ProtocolType.Udp, "ABC");
Infrastructure.IfTrueError(result1.Succeeded != EchoClient_Rfc_862.EchoResult.State.Succeeded, "Close TCP status should be succeeded");
Infrastructure.IfTrueError(result1.Value != "ABC", $"Should have gotten back abcDEF123456, not {result1.Value}");
var result2 = await client.WriteAsync(new HostName("localhost"), server.Options.Service, EchoClient_Rfc_862.ProtocolType.Udp, "123");
Infrastructure.IfTrueError(result2.Succeeded != EchoClient_Rfc_862.EchoResult.State.Succeeded, "Close TCP status should be succeeded");
Infrastructure.IfTrueError(result2.Value != "123", $"Should have gotten back abcDEF123456, not {result2.Value}");
}
}
public async Task Test_Echo_Good_Path_Tcp()
{
using (var server = new EchoServer_Rfc_862())
{
var client = new EchoClient_Rfc_862();
await server.StartAsync();
var result1 = await client.WriteAsync(new HostName("localhost"), server.Options.Service, EchoClient_Rfc_862.ProtocolType.Tcp, "ABCdef");
Infrastructure.IfTrueError(result1.Succeeded != EchoClient_Rfc_862.EchoResult.State.InProgress, "TCP status should be in progress");
var result2 = await client.WriteAsync(new HostName("localhost"), server.Options.Service, EchoClient_Rfc_862.ProtocolType.Tcp, "123456");
Infrastructure.IfTrueError(result2.Succeeded != EchoClient_Rfc_862.EchoResult.State.InProgress, "TCP status should be in progress");
await Task.Delay(100); //TODO: artificial delay to get the results.
var result3 = await client.CloseAsync();
Infrastructure.IfTrueError(result3.Succeeded != EchoClient_Rfc_862.EchoResult.State.Succeeded, "Close TCP status should be succeeded");
Infrastructure.IfTrueError(result3.Value != "ABCdef123456", $"Should have gotten back abcDEF123456, not {result3.Value}");
}
}
public async Task Test_Bad_Host(EchoClient_Rfc_862.ProtocolType protocol)
{
var host = new HostName("invalid.host.doesnt.exist.example.com");
var clientOptions = new EchoClient_Rfc_862.ClientOptions()
{
LoggingLevel = EchoClient_Rfc_862.ClientOptions.Verbosity.None
};
var client = new EchoClient_Rfc_862(clientOptions);
var result = await client.WriteAsync(host, "10013", protocol, "ABCDEF");
Infrastructure.IfTrueError(result.Succeeded != EchoClient_Rfc_862.EchoResult.State.Failed, "result.Succeeded ");
Infrastructure.IfTrueError(!String.IsNullOrEmpty(result.Value), "result.Value is not null");
Infrastructure.IfTrueError(result.Error != SocketErrorStatus.HostNotFound, $"result.Error is wrong ({result.Error})");
}
public static async Task <EchoClient_Rfc_862.EchoResult> RunUdpAsync()
{
// Hint: the using here means that the server is automatically closed
// after the code is done. If you don't do that, the server stays open.
using (var server = new EchoServer_Rfc_862())
{
await server.StartAsync();
var client = new EchoClient_Rfc_862();
var result = await client.WriteAsync(
new Windows.Networking.HostName("localhost"),
server.Options.Service,
EchoClient_Rfc_862.ProtocolType.Udp,
"Hello, echo server!");
await client.CloseAsync(); // Close is really needed for TCP.
return(result);
}
}
private async void OnSend(object sender, RoutedEventArgs e)
{
try
{
var host = new HostName(uiAddress.Text);
var service = uiService.Text;
var data = uiData.Text;
var ptype = uiProtocolType.IsOn ? EchoClient_Rfc_862.ProtocolType.Udp : EchoClient_Rfc_862.ProtocolType.Tcp; // double-checked; off is TCP.
if (client == null)
{
client = new EchoClient_Rfc_862();
client.LogEvent += Client_LogEvent;
}
await client.WriteAsync(host, service, ptype, data);
}
catch (Exception ex)
{
Client_LogEvent(this, $"ERROR: Client: Write exception {ex.Message} for host {uiAddress.Text}");
}
}