/// <summary>
/// Sends a transmission and handle errors.
/// </summary>
/// <param name="transmission">The transmission to send.</param>
/// <param name="nextSendInterval">When this value returns it will hold a recommendation for when to start the next sending iteration.</param>
/// <returns>A boolean value that indicates if there was a retriable error.</returns>
protected virtual bool Send(StorageTransmission transmission, ref TimeSpan nextSendInterval)
{
try
{
if (transmission != null)
{
transmission.SendAsync().ConfigureAwait(false).GetAwaiter().GetResult();
// After a successful sending, try immeidiately to send another transmission.
nextSendInterval = this.SendingInterval;
}
}
catch (WebException e)
{
int?statusCode = GetStatusCode(e);
nextSendInterval = this.CalculateNextInterval(statusCode, nextSendInterval, this.maxIntervalBetweenRetries);
return(IsRetryable(statusCode, e.Status));
}
catch (Exception e)
{
nextSendInterval = this.CalculateNextInterval(null, nextSendInterval, this.maxIntervalBetweenRetries);
string msg = string.Format(CultureInfo.InvariantCulture, "Unknown exception during sending: {0}", e);
CoreEventSource.Log.LogVerbose(msg);
}
return(false);
}
/// <summary>
/// Sends a transmission and handle errors.
/// </summary>
/// <param name="transmission">The transmission to send.</param>
/// <param name="nextSendInterval">When this value returns it will hold a recommendation for when to start the next sending iteration.</param>
/// <returns>A boolean value that indicates if there was a retriable error.</returns>
protected virtual bool Send(StorageTransmission transmission, ref TimeSpan nextSendInterval)
{
try
{
if (transmission != null)
{
transmission.SendAsync().ConfigureAwait(false).GetAwaiter().GetResult();
// After a successful sending, try immeidiately to send another transmission.
nextSendInterval = this.SendingInterval;
}
}
// https://github.com/microsoft/ApplicationInsights-dotnet/blob/70e438848915ec163fd7794221b27be34260d3b4/BASE/src/Microsoft.ApplicationInsights/Channel/Transmission.cs#L158
// HttpClient.SendAsync throws HttpRequestException only on the following scenarios:
// "The request failed due to an underlying issue such as network connectivity, DNS failure, server certificate validation or timeout."
// i.e for Server errors (500 status code), no exception is thrown.
catch (HttpRequestException)
{
nextSendInterval = this.CalculateNextInterval(null, nextSendInterval, this.maxIntervalBetweenRetries);
return(true);
}
catch (WebException e)
{
int?statusCode = GetStatusCode(e);
nextSendInterval = this.CalculateNextInterval(statusCode, nextSendInterval, this.maxIntervalBetweenRetries);
return(IsRetryable(statusCode, e.Status));
}
catch (Exception e)
{
nextSendInterval = this.CalculateNextInterval(null, nextSendInterval, this.maxIntervalBetweenRetries);
string msg = string.Format(CultureInfo.InvariantCulture, "Unknown exception during sending: {0}", e);
CoreEventSource.Log.LogVerbose(msg);
}
return(false);
}
/// <summary>
/// Sends a transmission and handle errors.
/// </summary>
/// <param name="transmission">The transmission to send.</param>
/// <param name="nextSendInterval">When this value returns it will hold a recommendation for when to start the next sending iteration.</param>
/// <returns>A boolean value that indicates if there was a retriable error.</returns>
protected virtual bool Send(StorageTransmission transmission, ref TimeSpan nextSendInterval)
{
try
{
if (transmission != null)
{
transmission.SendAsync().ConfigureAwait(false).GetAwaiter().GetResult();
// After a successful sending, try immeidiately to send another transmission.
nextSendInterval = this.SendingInterval;
}
}
catch (WebException e)
{
int? statusCode = GetStatusCode(e);
nextSendInterval = this.CalculateNextInterval(statusCode, nextSendInterval, this.maxIntervalBetweenRetries);
return IsRetryable(statusCode, e.Status);
}
catch (Exception e)
{
nextSendInterval = this.CalculateNextInterval(null, nextSendInterval, this.maxIntervalBetweenRetries);
string msg = string.Format(CultureInfo.InvariantCulture, "Unknown exception during sending: {0}", e);
CoreEventSource.Log.LogVerbose(msg);
}
return false;
}
