That sounds very strange, I do the exact same thing only with e-mails and it works just fine for me. I've added my code, I hope it will help you spot your bug.
/// <summary>
/// Create or update a queue
/// </summary>
/// <param name="queueName">Name of queue</param>
/// <param name="message">Message to post in the queue</param>
/// <returns>Return true on success, false if already exists, throw exception on error</returns>
public bool PutMessage(string queueName, CloudQueueMessage message)
{
try
{
var queue = queueContext.QueueClient.GetQueueReference(queueName);
queue.AddMessage(message);
return true;
}
catch (StorageClientException ex)
{
if ((int)ex.StatusCode == 404) return false;
throw;
}
}
/// <summary>
/// Serializes a e-mail to Json
/// </summary>
/// <param name="from">Sender e-mail address</param>
/// <param name="to">Recipient e-mail address</param>
/// <param name="subject">E-mail subject text</param>
/// <param name="body">E-mail body text</param>
/// <returns>Json</returns>
string SerializeEmail(string from, string to, string subject, string body)
{
var email = new EmailEntity()
{
From = from,
To = to,
Subject = subject,
Body = body
};
var stream = new MemoryStream();
var serializer = new DataContractJsonSerializer(typeof(EmailEntity));
serializer.WriteObject(stream, email);
var serializedEmail = Encoding.Default.GetString(stream.ToArray());
stream.Close();
return serializedEmail;
}
/// <summary>
/// Puts a e-mail on the Azure queue to be sent
/// </summary>
/// <param name="from">Sender e-mail address</param>
/// <param name="to">Recipient e-mail address</param>
/// <param name="subject">E-mail subject text</param>
/// <param name="body">E-mail body text</param>
/// <returns>Return true on success, false if already exists, throw exception on error</returns>
public bool SendEmail(string from, string to, string subject, string body)
{
var serializedEmail = SerializeEmail(from, to, subject, body);
var message = new CloudQueueMessage(serializedEmail);
return PutMessage(AzureQueueContext.EmailQueueName, message);
}
/// <summary>
/// Retrieve the next message from a queue
/// </summary>
/// <param name="queueName">Name of queue</param>
/// <param name="message">Message</param>
/// <returns>Return true on success (message available), false if no message or no queue, throw exception on error</returns>
bool GetMessage(string queueName, out CloudQueueMessage message)
{
message = null;
try
{
var queue = GetCloudQueueClient().GetQueueReference(queueName);
message = queue.GetMessage();
return message != null;
}
catch (StorageClientException ex)
{
if ((int)ex.StatusCode == 404) return false;
throw;
}
}
/// <summary>
/// Deserializes a e-mail message
/// </summary>
/// <param name="message">Message serialized in the Json inerchange format</param>
/// <returns>Deserialized e-mail as a EmailEntity object</returns>
EmailEntity DeserializeEmail(CloudQueueMessage message)
{
var stream = new MemoryStream(Encoding.Default.GetBytes(message.AsString));
var ser = new DataContractJsonSerializer(typeof(EmailEntity));
var email = (EmailEntity)ser.ReadObject(stream);
stream.Close();
return email;
}
/// <summary>
/// Retrieve the next message from a queue
/// </summary>
/// <param name="email">E-mail</param>
/// <returns>Return true on success (message available), false if no message or no queue, throw exception on error</returns>
public bool GetEmail(out EmailEntity email, out CloudQueueMessage message)
{
var result = GetMessage(AzureQueueContext.EmailQueueName, out message);
email = result ? DeserializeEmail(message) : null;
return result;
}
