public async Task AddHeaders(HttpRequestMessage request,
IDictionary <string, string> headers,
IGetAuthorisationHeaderStrategy authStrategy)
{
if (headers != null)
{
foreach (var header in headers)
{
request.Headers.Add(header.Key, header.Value);
}
}
if (authStrategy != null)
{
request.Headers.Add(HttpRequestHeader.Authorization.ToString(),
new List <string> {
await authStrategy.GetHeader()
});
}
}