Setting Maximum Size For ObjectContent Web API Preview 5 - asp.net-mvc-3

Question

When I use the the ObjectContent object to create the HttpContent to send a request via HttpClient to a Web API service I am getting the following error:
Cannot write more bytes to the buffer than the configured maximum buffer size: 65536
The following code is being used to send the request. The Card object has about 15 properties.
var client = new HttpClient();
var content = new ObjectContent<IEnumerable<Card>>(cards, "application/xml");
MessageBox.Show(content.ReadAsString()); //This line gives me the same error.
var response = client.Post("http://localhost:9767/api/cards", content);
How do I change the configured size to something greater than 65,536?

Answer 1

Since the problem resides in the ReadAsString extension method I would suggest that you create your own extension method to solve the maximum buffer size issue.
Here’s an example of a ReadAsLargeString extension method that maybe solves the problem.
public static string ReadAsLargeString(this HttpContent content)
{
var bufferedContent = new MemoryStream();
content.CopyTo(bufferedContent);
if (bufferedContent.Length == 0)
{
return string.Empty;
}
Encoding encoding = DefaultStringEncoding;
if ((content.Headers.ContentType != null) && (content.Headers.ContentType.CharSet != null))
{
encoding = Encoding.GetEncoding(content.Headers.ContentType.CharSet);
}
return encoding.GetString(bufferedContent.GetBuffer(), 0, (int)bufferedContent.Length);
}

Answer 2

There is a thread about this. Try using HttpCompletionOption.ResponseContentRead:
var message = new HttpRequestMessage(HttpMethod.Post, "http://localhost:9767/api/cards");
message.Content = content;
var client = new HttpClient();
client.Send(message, HttpCompletionOption.ResponseContentRead);

Answer 3

Try this for the client:
HttpClient client = new HttpClient("http://localhost:52046/");
// enable support for content up to 10 MB size
HttpClientChannel channel = new HttpClientChannel() {
MaxRequestContentBufferSize = 1024 * 1024 * 10
};
client.Channel = channel;
On the Server (snippet is based preview 4 but you should get the clue):
public class CustomServiceHostFactory : HttpConfigurableServiceHostFactory {
public override ServiceHostBase CreateServiceHost(string constructorString, Uri[] baseAddresses) {
var host = base.CreateServiceHost(constructorString, baseAddresses);
foreach (HttpEndpoint endpoint in host.Description.Endpoints) {
endpoint.TransferMode = TransferMode.Streamed;
endpoint.MaxReceivedMessageSize = 1024 * 1024 * 10;
}
return host;
}
}