/// <summary>
/// Create an send-side HybridConnectionStream, send N bytes to it, receive N bytes response from it,
/// then close the HybridConnectionStream.
/// </summary>
async Task RunEchoClientAsync(HybridConnectionStream clientStream, int byteCount)
{
var cancelSource = new CancellationTokenSource(TimeSpan.FromSeconds(20));
try
{
byte[] sendBuffer = this.CreateBuffer(byteCount, new[] { (byte)(byteCount % byte.MaxValue) });
await clientStream.WriteAsync(sendBuffer, 0, sendBuffer.Length, cancelSource.Token);
byte[] readBuffer = new byte[sendBuffer.Length + 10];
int bytesRead = await clientStream.ReadAsync(readBuffer, 0, readBuffer.Length, cancelSource.Token);
Assert.Equal(sendBuffer.Length, bytesRead);
await clientStream.CloseAsync(cancelSource.Token);
}
catch (Exception e)
{
TestUtility.Log($"[byteCount={byteCount}] {e.GetType().Name}: {e.Message}");
await clientStream.CloseAsync(cancelSource.Token);
throw;
}
finally
{
cancelSource.Dispose();
}
}
private async void ProcessMessage(HybridConnectionStream relayConnection, CancellationTokenSource cts)
{
// Bi-directional streams for read and write to the relay
var reader = new StreamReader(relayConnection);
var writer = new StreamWriter(relayConnection)
{
AutoFlush = true
};
while (!cts.IsCancellationRequested)
{
// Read a message in input from the relay
var message = await reader.ReadToEndAsync();
// Resolve address by invoking a service on the GIS server
GisObject gisObject = JsonConvert.DeserializeObject <GisObject>(message);
await new GisServer().ResolveAddressAsync(gisObject);
// Write the message back to the relay
message = JsonConvert.SerializeObject(gisObject);
await writer.WriteLineAsync(message);
}
await relayConnection.CloseAsync(cts.Token);
}
private async void ProcessMessagesOnConnection(HybridConnectionStream connection, CancellationToken token)
{
try
{
try
{
try
{
while (!token.IsCancellationRequested)
{
IFeatureCollection features = await _featureSerializerManager.ReadAsync(connection, new[] { typeof(IHttpRequestFeature) }, token);
PrepareDefaultFeatures(features);
await _requestReceivedCallback(features, token);
await _featureSerializerManager.WriteAsync(connection, features, new[] { typeof(IHttpResponseFeature) }, token);
}
}
finally
{
await connection.ShutdownAsync(token);
}
}
catch (IOException)
{ }
catch (RelayException)
{ }
}
finally
{
await connection.CloseAsync(token);
}
}
static async Task TestStreaming(HybridConnectionListener listener, RelayConnectionStringBuilder connectionString, TraceSource traceSource)
{
traceSource.TraceInformation("Testing Streaming (WebSocket) mode");
RunAcceptPump(listener);
var client = new HybridConnectionClient(connectionString.ToString());
var requestBytes = Encoding.UTF8.GetBytes("<data>Request payload from sender</data>");
HybridConnectionStream stream = await client.CreateConnectionAsync();
string connectionName = $"S:HybridConnectionStream({stream.TrackingContext.TrackingId})";
RelayTraceSource.TraceInfo($"{connectionName} initiated");
RunConnectionPump(stream, connectionName);
for (int i = 0; i < 2; i++)
{
await stream.WriteAsync(requestBytes, 0, requestBytes.Length);
RelayTraceSource.TraceVerbose($"{connectionName} wrote {requestBytes.Length} bytes");
}
using (var closeCts = new CancellationTokenSource(TimeSpan.FromSeconds(5)))
{
RelayTraceSource.TraceVerbose($"{connectionName} closing");
await stream.CloseAsync(closeCts.Token);
RelayTraceSource.TraceInfo($"{connectionName} closed");
}
await Task.Delay(TimeSpan.FromMilliseconds(100));
}
private static async void ProcessMessagesOnConnection(HybridConnectionStream relayConnection, CancellationTokenSource cts)
{
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("New session established...");
Console.ForegroundColor = ConsoleColor.White;
// The connection is a fully bidrectional stream.
// We put a stream reader and a stream writer over it
// which allows us to read UTF-8 text that comes from
// the sender and to write text replies back.
var reader = new StreamReader(relayConnection);
var writer = new StreamWriter(relayConnection)
{
AutoFlush = true
};
// Write the line back to the client, prepending "Echo:"
await writer.WriteLineAsync("Hello client from the server!");
while (!cts.IsCancellationRequested)
{
try
{
// Read a line of input until a newline is encountered
var line = await reader.ReadLineAsync();
if (string.IsNullOrEmpty(line))
{
// If there's no input data, we will signal that
// we will no longer send data on this connection
// and then break out of the processing loop.
await relayConnection.ShutdownAsync(cts.Token);
break;
}
// Output the line on the console
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("Received from client: " + line);
Console.ForegroundColor = ConsoleColor.White;
// Write the line back to the client, prepending "Echo:"
await writer.WriteLineAsync($"Thanks for sending: {line}");
}
catch (Exception ex)
{
// Catch an IO exception that is likely caused because
// the client disconnected.
Console.WriteLine("Looks like the client closed connection...");
break;
}
}
Console.WriteLine("Session ended with client...");
// Closing the connection
await relayConnection.CloseAsync(cts.Token);
}
static async Task CloseConnection(HybridConnectionStream hybridConnectionStream)
{
using (var cts = new CancellationTokenSource(TimeSpan.FromMinutes(1)))
{
await hybridConnectionStream.ShutdownAsync(cts.Token);
await hybridConnectionStream.CloseAsync(cts.Token);
}
}
/// <summary>
/// We run two concurrent loops on the connection. One reads input from the console and writes it to the connection
/// with a stream writer. The other reads lines of input from the connection with a stream reader and writes them to the console.
/// Entering a blank line will shut down the write task after sending it to the server. The server will then cleanly shut down
/// the connection which will terminate the read task.
/// </summary>
/// <returns></returns>
protected async Task RunAsync()
{
// Initiate the connection
_relayConnection = await _client.CreateConnectionAsync();
var reads = GetReads(_relayConnection);
// Wait for both tasks to complete
await Task.WhenAll(reads);
await _relayConnection.CloseAsync(CancellationToken.None);
}
private static async void ProcessMessagesOnConnection(HybridConnectionStream relayConnection, CancellationTokenSource cts)
{
Console.WriteLine("New session");
// The connection is a fully bidrectional stream.
// Put a stream reader and a stream writer over it.
// This allows you to read UTF-8 text that comes from
// the sender, and to write text replies back.
var reader = new StreamReader(relayConnection);
var writer = new StreamWriter(relayConnection)
{
AutoFlush = true
};
while (!cts.IsCancellationRequested)
{
try
{
// Read a line of input until a newline is encountered.
var line = await reader.ReadLineAsync();
if (string.IsNullOrEmpty(line))
{
// If there's no input data, signal that
// you will no longer send data on this connection.
// Then, break out of the processing loop.
await relayConnection.ShutdownAsync(cts.Token);
break;
}
// Write the line on the console.
Console.WriteLine(line);
// Write the line back to the client, prepended with "Echo:"
await writer.WriteLineAsync($"Echo: {line}");
}
catch (IOException)
{
// Catch an I/O exception. This likely occurred when
// the client disconnected.
Console.WriteLine("Client closed connection");
break;
}
}
Console.WriteLine("End session");
// Close the connection.
await relayConnection.CloseAsync(cts.Token);
}
public async Task CloseAsync(CancellationToken token)
{
try
{
if (_connection == null)
{
return;
}
await _connection.ShutdownAsync(token);
await _connection.CloseAsync(token);
}
finally
{
IsOpen = false;
GoodStatus = false;
_connection = null;
}
}
private static async void ProcessMessagesOnConnection(HybridConnectionStream relayConnection,
CancellationTokenSource cts)
{
Console.WriteLine("New session");
// The connection is a fully bidrectional stream, enabling the Listener
//to echo the text from the Sender.
var reader = new StreamReader(relayConnection);
var writer = new StreamWriter(relayConnection)
{
AutoFlush = true
};
while (!cts.IsCancellationRequested)
{
try
{
// Read a line of input until a newline is encountered
var line = await reader.ReadLineAsync();
if (string.IsNullOrEmpty(line))
{
await relayConnection.ShutdownAsync(cts.Token);
break;
}
Console.WriteLine(line);
// Echo the line back to the client
await writer.WriteLineAsync($"Echo: {line}");
}
catch (IOException)
{
Console.WriteLine("Client closed connection");
break;
}
}
Console.WriteLine("End session");
// Close the connection
await relayConnection.CloseAsync(cts.Token);
}
private static async void ProcessMessagesOnConnection(HybridConnectionStream relayConnection, CancellationTokenSource cts)
{
Console.WriteLine("New Session");
var reader = new StreamReader(relayConnection);
var writer = new StreamWriter(relayConnection)
{
AutoFlush = true
};
while (!cts.IsCancellationRequested)
{
try
{
var line = reader.ReadLine();
if (string.IsNullOrEmpty(line))
{
await relayConnection.ShutdownAsync(cts.Token);
break;
}
Console.WriteLine(line);
await writer.WriteLineAsync($"Echo: {line}");
}
catch (IOException ex)
{
Console.WriteLine(ex.Message);
break;
}
}
Console.WriteLine("End session");
await relayConnection.CloseAsync(cts.Token);
}
static async void RunConnectionPump(HybridConnectionStream stream, string connectionName, bool echoBytes = false)
{
try
{
var buffer = new byte[256];
while (true)
{
int read = await stream.ReadAsync(buffer, 0, buffer.Length);
RelayTraceSource.TraceVerbose($"{connectionName} received {read} bytes: \"{Encoding.UTF8.GetString(buffer, 0, read)}\"");
if (read == 0)
{
using (var cts = new CancellationTokenSource(TimeSpan.FromSeconds(10)))
{
RelayTraceSource.TraceVerbose($"{connectionName} closing");
await stream.CloseAsync(cts.Token);
RelayTraceSource.TraceInfo($"{connectionName} closed");
}
return;
}
if (echoBytes)
{
await stream.WriteAsync(buffer, 0, read);
RelayTraceSource.TraceVerbose($"{connectionName} echoed {read} bytes");
}
}
}
catch (Exception exception)
{
RelayTraceSource.TraceException(exception, nameof(RunConnectionPump));
}
}
public async Task CloseRelayStreamAsync()
{
await _relayStream.CloseAsync(CancellationToken.None);
}
internal static async Task VerifySendAsync(RelayConnectionStringBuilder connectionString, int number, string httpMethod, string requestData, TraceSource traceSource)
{
Uri hybridHttpUri = new Uri($"https://{connectionString.Endpoint.GetComponents(UriComponents.HostAndPort, UriFormat.SafeUnescaped)}/{connectionString.EntityPath}");
var tokenProvider = GetTokenProvider(connectionString);
if (string.Equals("WS", httpMethod, StringComparison.OrdinalIgnoreCase) ||
string.Equals("WEBSOCKET", httpMethod, StringComparison.OrdinalIgnoreCase))
{
var client = new HybridConnectionClient(connectionString.ToString());
var requestBytes = Encoding.UTF8.GetBytes(requestData ?? string.Empty);
HybridConnectionStream stream = await client.CreateConnectionAsync();
string connectionName = $"S:HybridConnectionStream({stream.TrackingContext.TrackingId})";
RelayTraceSource.TraceInfo($"{connectionName} initiated");
RunConnectionPump(stream, connectionName);
for (int i = 0; i < number; i++)
{
await stream.WriteAsync(requestBytes, 0, requestBytes.Length);
RelayTraceSource.TraceVerbose($"{connectionName} wrote {requestBytes.Length} bytes");
}
await Task.Delay(TimeSpan.FromSeconds(1));
using (var cts = new CancellationTokenSource(TimeSpan.FromSeconds(5)))
{
RelayTraceSource.TraceVerbose($"{connectionName} closing");
await stream.CloseAsync(cts.Token);
RelayTraceSource.TraceInfo($"{connectionName} closed");
}
return;
}
string token = null;
if (tokenProvider != null)
{
token = (await tokenProvider.GetTokenAsync(hybridHttpUri.AbsoluteUri, TimeSpan.FromDays(2))).TokenString;
}
var stopwatch = new Stopwatch();
using (var client = new HttpClient {
BaseAddress = hybridHttpUri
})
{
client.DefaultRequestHeaders.ExpectContinue = false;
for (int i = 0; i < number; i++)
{
stopwatch.Restart();
var httpRequest = new HttpRequestMessage();
if (token != null)
{
httpRequest.Headers.Add("ServiceBusAuthorization", token);
}
httpRequest.Method = new HttpMethod(httpMethod);
if (requestData != null)
{
httpRequest.Content = new StringContent(requestData);
}
LogHttpRequest(httpRequest, client, traceSource);
using (HttpResponseMessage response = await client.SendAsync(httpRequest))
{
LogHttpResponse(response, traceSource);
}
traceSource.TraceInformation($"Elapsed: {stopwatch.ElapsedMilliseconds} ms");
}
}
}
static async Task Main(string[] args)
{
string hostAddress;
string hybridConnectionName;
string clientId = null;
string tenantId = null;
string clientSecret = null;
RbacAuthenticationOption option;
if (args.Length == 2)
{
option = RbacAuthenticationOption.ManagedIdentity;
hostAddress = args[0];
hybridConnectionName = args[1];
}
else if (args.Length == 3)
{
option = RbacAuthenticationOption.UserAssignedIdentity;
hostAddress = args[0];
hybridConnectionName = args[1];
clientId = args[2];
}
else if (args.Length == 5)
{
option = RbacAuthenticationOption.AAD;
hostAddress = args[0];
hybridConnectionName = args[1];
clientId = args[2];
tenantId = args[3];
clientSecret = args[4];
}
else
{
Console.WriteLine("Please run with parameters of the following format for the corresponding RBAC authentication method:");
Console.WriteLine("System Managed Identity: [HostAddress] [HybridConnectionName]");
Console.WriteLine("User Assigned Identity: [HostAddress] [HybridConnectionName] [ClientId]");
Console.WriteLine("Azure Active Directory: [HostAddress] [HybridConnectionName] [ClientId] [TenantId] [ClientSecret]");
Console.WriteLine("Press <Enter> to exit...");
Console.ReadLine();
return;
}
TokenProvider tokenProvider = null;
switch (option)
{
case RbacAuthenticationOption.ManagedIdentity:
tokenProvider = TokenProvider.CreateManagedIdentityTokenProvider();
break;
case RbacAuthenticationOption.UserAssignedIdentity:
var managedCredential = new ManagedIdentityCredential(clientId);
tokenProvider = TokenProvider.CreateManagedIdentityTokenProvider(managedCredential);
break;
case RbacAuthenticationOption.AAD:
tokenProvider = GetAadTokenProvider(clientId, tenantId, clientSecret);
break;
}
var hybridConnectionUri = new Uri($"{hostAddress}/{hybridConnectionName}");
HybridConnectionListener listener = null;
try
{
// The HybridConnection should be already created through Azure Portal or other means
Console.WriteLine($"Creating the Relay listener instance with RBAC option: {option}");
listener = new HybridConnectionListener(hybridConnectionUri, tokenProvider);
await listener.OpenAsync(TimeSpan.FromSeconds(10));
Console.WriteLine("Created and connected the Relay listener instance.");
Console.WriteLine($"Creating the Relay sender instance with RBAC option: {option}");
var sender = new HybridConnectionClient(hybridConnectionUri, tokenProvider);
var createSenderTask = sender.CreateConnectionAsync();
var listenerAcceptTask = listener.AcceptConnectionAsync();
using (HybridConnectionStream senderStream = await createSenderTask)
using (HybridConnectionStream listenerStream = await listenerAcceptTask)
{
Console.WriteLine("Created and connected the Relay sender instance.");
var senderCloseTask = senderStream.CloseAsync(CancellationToken.None);
await listenerStream.CloseAsync(CancellationToken.None);
await senderCloseTask;
}
// Configure a RequestHandler for HTTP request/response mode
listener.RequestHandler = (context) =>
{
context.Response.StatusCode = HttpStatusCode.OK;
using (var sw = new StreamWriter(context.Response.OutputStream))
{
sw.WriteLine("hello!");
}
// The context must be closed to complete sending the response
context.Response.Close();
};
Console.WriteLine($"Sending a HTTP request by setting the token in request header with RBAC option: {option}");
SecurityToken token = await tokenProvider.GetTokenAsync(hybridConnectionUri.AbsoluteUri, TimeSpan.FromMinutes(30));
var request = new HttpRequestMessage();
request.Headers.Add(HttpRequestHeader.Authorization.ToString(), token.TokenString);
var requestUri = new UriBuilder(hybridConnectionUri)
{
Scheme = "https"
}.Uri;
using (HttpClient client = new HttpClient {
BaseAddress = requestUri
})
{
using (var response = await client.SendAsync(request))
{
Console.WriteLine($"Response status code: {response.StatusCode}. Response reason phrase: {response.ReasonPhrase}");
}
}
Console.WriteLine($"Sending a HTTP request by setting the token in query string with RBAC option: {option}");
token = await tokenProvider.GetTokenAsync(hybridConnectionUri.AbsoluteUri, TimeSpan.FromMinutes(30));
request = new HttpRequestMessage();
requestUri = new UriBuilder(requestUri)
{
Query = $"?sb-hc-token={token.TokenString}"
}.Uri;
using (HttpClient client = new HttpClient {
BaseAddress = requestUri
})
{
using (var response = await client.SendAsync(request))
{
Console.WriteLine($"Response status code: {response.StatusCode}. Response reason phrase: {response.ReasonPhrase}");
}
}
Console.WriteLine("Press <Enter> to exit...");
Console.ReadLine();
}
finally
{
if (listener != null)
{
await listener.CloseAsync();
}
}
}
