/// <summary>
/// Send an async request to the client and await later for the response or error
/// </summary>
public Task <ResponseResultOrError> SendRequest(RequestType requestType, object parameters)
{
JObject jsonMessage = new JObject();
PrepareJsonPRCMessage(jsonMessage);
// Generate a unique id for the request
int id = Interlocked.Increment(ref sequenceNumber);
string requestId = id.ToString();
jsonMessage["id"] = requestId;
jsonMessage["method"] = requestType.Method;
if (parameters != null)
{
jsonMessage["params"] = JToken.FromObject(parameters);
}
// Send text message
messageServer.SendMessage(jsonMessage.ToString(Formatting.None));
// Remember all elements which will be needed to handle correctly the response to the request
TaskCompletionSource <ResponseResultOrError> taskCompletionSource = new TaskCompletionSource <ResponseResultOrError>();
ResponseWaitState responseWaitState = new ResponseWaitState(requestType, requestId, taskCompletionSource);
responsesExpected.Add(requestId, responseWaitState);
// The completion of the task will be signaled later, when the response arrives
return(taskCompletionSource.Task);
}
private void HandleResponse(string requestId, JToken result, JToken error)
{
ResponseWaitState responseWaitState = null;
responsesExpected.TryGetValue(requestId, out responseWaitState);
if (responseWaitState == null)
{
WriteServerLog(String.Format("No response was expected for request id \"{0}\"", requestId));
}
else
{
RequestType requestType = responseWaitState.RequestType;
object objResult = null;
if (result != null && requestType.ResultType != null)
{
objResult = result.ToObject(requestType.ResultType);
}
object objErrorData = null;
if (error != null && error["data"] != null && requestType.ErrorDataType != null)
{
objErrorData = error["data"].ToObject(requestType.ErrorDataType);
}
ResponseResultOrError resultOrError = new ResponseResultOrError();
resultOrError.result = objResult;
if (error != null && error["code"] != null)
{
resultOrError.code = (int)error["code"];
resultOrError.message = (string)error["message"];
resultOrError.data = objErrorData;
}
try
{
responseWaitState.TaskCompletionSource.SetResult(resultOrError);
}
catch (Exception e)
{
WriteServerLog(String.Format("Task completion for the response expected by request {0} of type {1} failed : {1}", requestId, requestType.GetType().Name, e.Message));
}
}
}
/// <summary>
/// Send an async request to the client and await later for the response or error
/// </summary>
public Task<ResponseResultOrError> SendRequest(RequestType requestType, object parameters)
{
JObject jsonMessage = new JObject();
PrepareJsonPRCMessage(jsonMessage);
// Generate a unique id for the request
int id = Interlocked.Increment(ref sequenceNumber);
string requestId = id.ToString();
jsonMessage["id"] = requestId;
jsonMessage["method"] = requestType.Method;
if (parameters != null)
{
jsonMessage["params"] = JToken.FromObject(parameters);
}
// Send text message
messageServer.SendMessage(jsonMessage.ToString(Formatting.None));
// Remember all elements which will be needed to handle correctly the response to the request
TaskCompletionSource<ResponseResultOrError> taskCompletionSource = new TaskCompletionSource<ResponseResultOrError>();
ResponseWaitState responseWaitState = new ResponseWaitState(requestType, requestId, taskCompletionSource);
responsesExpected.Add(requestId, responseWaitState);
// The completion of the task will be signaled later, when the response arrives
return taskCompletionSource.Task;
}
