Custom HTTP Header with webservice call

Question

Hi, I need to make a webservice call in C# and with every request i need to send a custom HTTP header. How do i do this.

thanks

Answer 1

Perhaps a little more detail about what you are trying to do would help. As far as working with headers...here is a link that might help.

Answer 2

Create a class that implements IClientMessageInspector. In the BeforeSendRequest method, add your custom header to the outgoing message. It might look something like this:

    public object BeforeSendRequest(ref System.ServiceModel.Channels.Message request,  System.ServiceModel.IClientChannel channel)
{
    HttpRequestMessageProperty httpRequestMessage;
    object httpRequestMessageObject;
    if (request.Properties.TryGetValue(HttpRequestMessageProperty.Name, out httpRequestMessageObject))
    {
        httpRequestMessage = httpRequestMessageObject as HttpRequestMessageProperty;
        if (string.IsNullOrEmpty(httpRequestMessage.Headers[USER_AGENT_HTTP_HEADER]))
        {
            httpRequestMessage.Headers[USER_AGENT_HTTP_HEADER] = this.m_userAgent;
        }
    }
    else
    {
        httpRequestMessage = new HttpRequestMessageProperty();
        httpRequestMessage.Headers.Add(USER_AGENT_HTTP_HEADER, this.m_userAgent);
        request.Properties.Add(HttpRequestMessageProperty.Name, httpRequestMessage);
    }
    return null;
}

Then create an endpoint behavior that applies the message inspector to the client runtime. You could apply the behavior as an attributes, or using a behavior extension element.

Here is a great example of how to add an HTTP user-agent header to all request messages. I am using this in a few of my clients. You could undoubtedly do something similar for just about any header. You can also do the same on the service side by implementing the IDispatchMessageInspector.

Is this what you had in mind?