private async Task <BatchResponse> SendBatchRequestAsync(
IEnumerable <Message> messages,
bool dryRun,
CancellationToken cancellationToken)
{
var responses = new List <SendResponse>();
var batch = this.CreateBatchRequest(
messages,
dryRun,
(content, error, index, message) =>
{
SendResponse sendResponse;
if (error != null)
{
var json = (error as ContentRetainingRequestError).Content;
var exception = MessagingErrorHandler.Instance.HandleHttpErrorResponse(
message, json);
sendResponse = SendResponse.FromException(exception);
}
else if (content != null)
{
sendResponse = SendResponse.FromMessageId(content.Name);
}
else
{
var exception = new FirebaseMessagingException(
ErrorCode.Unknown,
$"Unexpected batch response. Response status code: {message.StatusCode}.");
sendResponse = SendResponse.FromException(exception);
}
responses.Add(sendResponse);
});
await batch.ExecuteAsync(cancellationToken).ConfigureAwait(false);
return(new BatchResponse(responses));
}