Add Request header to WCF when using ConfigurationChannelFactory.CreateChannel - wcf-security

Question

I need to add a Request Header to a WCF Request when using ConfigurationChannelFactory.CreateChannel.
I have already tried using OperationContextScope.
I have a function which is as shown below:
public O Execute<O>(Func<T, O> action, string configFilePath, string endpoint, StringDictionary headers)
{
bool closed = false;
T channel = default(T);
O output = default(O);
try
{
channel = this.GetChannel(configFilePath, endpoint);
if (headers != null && headers.Count > 0)
{
(channel as IClientChannel).Open();
using (new OperationContextScope(channel as IClientChannel))
{
HttpRequestMessageProperty requestMessage = new HttpRequestMessageProperty();
foreach (DictionaryEntry header in headers)
{
requestMessage.Headers[header.Key.ToString()] = header.Value.ToString();
}
OperationContext.Current.OutgoingMessageProperties[HttpRequestMessageProperty.Name] = requestMessage;
output = action(channel);
}
(channel as IClientChannel).Close();
}
else
{
(channel as IClientChannel).Open();
output = action(channel);
(channel as IClientChannel).Close();
}
closed = true;
}
finally
{
if (!closed && channel != null)
{
(channel as IClientChannel).Abort();
}
}
return output;
}
private T GetChannel(string configFilePath, string endpoint)
{
//Get the ChannelFactoryObject
ConfigurationChannelFactory<T> wcfClientFactory = null;
ExeConfigurationFileMap fileMap = new ExeConfigurationFileMap { ExeConfigFilename = configFilePath };
wcfClientFactory = new ConfigurationChannelFactory<T>(endpoint, ConfigurationManager.OpenMappedExeConfiguration(fileMap, ConfigurationUserLevel.None), null);
return wcfClientFactory.CreateChannel();
}
Configuration file entry:
<security mode="Transport">
<transport clientCredentialType="None" proxyCredentialType="None" realm="" />;clientCredentialType="Windows" negotiateServiceCredential="true" />
</security>
The above function is called from another .cs file, as shown below, passing Func<T,O> as an argument:
Execute<MyService.InformationResponse[]>=>IMyService.GetInformation(Request), ConfigPath, myServiceEndPoint, headers);
I am getting 400, BadRequest as the Service is expecting "Authorization" in the Request header, which it is not able to find.

Answer 1

We could use the WebOperationContext class to alter and add HTTP header, please refer to the below code segments.
IService service = factory.CreateChannel();
using (OperationContextScope scope = new OperationContextScope((IContextChannel)service))
{
WebOperationContext.Current.OutgoingRequest.ContentType = "application/json; charset=utf-8";
WebOperationContext.Current.OutgoingRequest.Headers.Add("Authorization", "bearer xxxxxxxx");
service.GetData();
}
Result.
For details,
https://learn.microsoft.com/en-us/dotnet/api/system.servicemodel.web.weboperationcontext?redirectedfrom=MSDN&view=netframework-4.8
Feel free to let me know if there is anything I can help with.