public async Task RequestTest()
{
const string subject = "some_subject";
const string expectedReply = "some reply";
var encodedReply = Encoding.UTF8.GetBytes(expectedReply);
string inbox = null, subscriptionId = null;
var resetEvent = new ManualResetEvent(false);
var messageSubject = new Subject <Message <IncomingMessage> >();
var mockNatsConnection = new Mock <INatsConnection>();
mockNatsConnection
.Setup(x => x.Write(It.IsAny <byte[]>(), It.IsAny <CancellationToken>()))
.Returns <byte[], CancellationToken>((data, _) =>
{
var message = Encoding.UTF8.GetString(data);
var match = Regex.Match(message, $"^PUB {subject} ([^ \r\n]+) [0-9]+\r\n.*");
if (match.Success)
{
inbox = match.Groups[1].Value;
resetEvent.Set();
}
else
{
match = Regex.Match(message, "^SUB _INBOX.[^ \r\n]+ ([^ \r\n]+)\r\n$");
if (match.Success)
{
subscriptionId = match.Groups[1].Value;
}
}
return(Task.CompletedTask);
});
mockNatsConnection.Setup(x => x.Messages).Returns(messageSubject);
mockNatsConnection.Setup(x => x.OnConnect).Returns(Observable.Return(new ServerInfo()));
using (var client = new NatsClient(mockNatsConnection.Object))
{
var requestTask = client.Request(subject, _timeout);
resetEvent.WaitOne(_timeout);
Assert.False(string.IsNullOrEmpty(subscriptionId), "Client published request before subscribing for result");
var incomingMessage = new IncomingMessage(inbox, subscriptionId, string.Empty, encodedReply.Length, encodedReply);
messageSubject.OnNext(Message.From("MSG", incomingMessage));
var reply = await requestTask;
Assert.Equal(incomingMessage, reply);
}
}
public static async Task <IncomingMessage> Request(this NatsClient @this, string subject, string data, TimeSpan timeout)
{
var cancellationTokenSource = new CancellationTokenSource(timeout);
return(await @this.Request(subject, data, cancellationTokenSource.Token));
}
public static async Task <IncomingMessage> Request(this NatsClient @this, string subject, string data, CancellationToken cancellationToken = default(CancellationToken))
{
return(await @this.Request(subject, Encoding.UTF8.GetBytes(data), cancellationToken));
}
/// <summary>
/// Sends greeting message to routers.
/// </summary>
/// <param name="callback">Callback on reponse.</param>
public void SendRouterGreetings(SubscribeCallback callback)
{
NatsClient.Request("router.greet", null, callback, "{}");
}