protected void OnBeginRequest()
{
//默认写法
//if (BeginRequest != null) BeginRequest(this, new EventArgs());
//新写法
BeginRequest?.Invoke(this, new EventArgs());
}
public void ExecuteEventHandler()
{
BeginRequest?.Invoke(this, null);
PostMapRequestHandler?.Invoke(this, null);
AcquireRequestState?.Invoke(this, null);
//Error?.Invoke(this, null);这个只有异常才调用，所以不需要在这里调用
}
private void StartTimer(TimeSpan timeout, BeginRequest requestToRetry)
{
if (timer != null)
{
System.Diagnostics.Debug.Assert(timer == null);
}
if (logger != null)
{
logger.TraceFormat("{0} will time out in {1}", this, timeout);
}
timer = new Timer(OnRequestTimeout, requestToRetry, timeout, TimeSpan.FromMilliseconds(-1));
}
private void OnRequestCompleted(BeginRequest nextRequest)
{
request = null;
content = null;
if (nextRequest == null)
{
OnConnectionFinished();
}
else
{
nextRequest();
}
}
public void SendsAndReceives()
{
IClient client = CreateClient();
_runtime.ReadResponse().Returns(GetOkResponse(new BeginResponse("myPromiseId")));
BeginRequest request = new BeginRequest
(
objectReference: new ObjectReference {
{ "$jsii.byref", "myRef" }
},
method: "myMethod",
arguments: new object[] { "arg1", "arg2" }
);
client.Begin(request);
_runtime.Received().WriteRequest(Arg.Is <string>(
actual => PlatformIndependentEqual(JsonConvert.SerializeObject(request), actual)
));
_runtime.Received().ReadResponse();
}
private void OnRequestTimeout(object state)
{
if (timer != null)
{
timer.Dispose();
timer = null;
}
BeginRequest requestToRetry = (BeginRequest)state;
request = null;
content = null;
if (requestToRetry == null)
{
OnConnectionFinished();
}
else
{
requestToRetry();
}
}
public BeginResponse Begin(BeginRequest request)
{
return(Send <BeginRequest, BeginResponse>(request));
}
/// <summary>
/// Sends a Begin Request to the Arduino.
/// </summary>
/// <param name="request">Begin Request</param>
/// <returns>The Begin Response</returns>
public async Task <BeginResponse> SendAsync(BeginRequest request)
{
return((BeginResponse) await InternalSendAsync(request));
}
private void OnRequestFailed(string description, RetryStrategy retryStrategy, BeginRequest requestToRetry)
{
CancelTimer();
request = null;
content = null;
if (!isRunning)
{
return;
}
switch (retryStrategy)
{
case RetryStrategy.Immediately:
{
if (description != null && logger != null)
{
logger.WarnFormat("{0} Will retry immediately", description);
}
requestToRetry();
break;
}
case RetryStrategy.AfterDefaultPeriod:
{
if (description != null && logger != null)
{
logger.WarnFormat("{0} Will retry in {1}", description, RetryTimeout);
}
StartTimer(RetryTimeout, requestToRetry);
break;
}
case RetryStrategy.WhenAuthenticated:
{
if (description != null && logger != null)
{
logger.WarnFormat("{0} Will retry when authenticated", description);
}
break;
}
case RetryStrategy.Never:
{
if (description != null && logger != null)
{
logger.WarnFormat("Failed to send {0}; will not retry", description);
}
OnConnectionFinished();
break;
}
}
}
