/// <summary>
/// Adds the headers necessary to trigger HMAC signing if we don't already have an Authentication header.
/// </summary>
/// <param name="client"></param>
/// <param name="headers"></param>
public static void AddHmacClientHeaders(this IHmacClient client, HttpRequestHeaders headers)
{
var auth = headers.Authorization;
if (auth != null)
{
return;
}
// Only bother if we don't have an authentication header?
var clientId = client.ClientId;
if (!string.IsNullOrEmpty(clientId))
{
// Mark it so we know to sign the message
headers.Add(HmacAuthentication.ClientIdHeader, clientId);
// See if we have any custom headers
var customHeaders = client.AddCustomHeaders(headers);
if (!string.IsNullOrEmpty(customHeaders))
{
// Ok, mark it so the signer knows to include them in the signature.
headers.Add(HmacAuthentication.CustomHeaders, customHeaders.Trim());
}
}
}
public HmacClientHandler(IHmacClient client)
{
this.client = client;
}