win_http_transport_impl.hpp

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
 
#pragma once
 
#include <memory>
#include <wincrypt.h>
 
#include <wil/resource.h>
 
namespace Azure { namespace Core { namespace Http { namespace _detail {
  class WinHttpTransportImpl : HttpTransport {
  private:
    WinHttpTransport const* m_parent;
 
    WinHttpTransportOptions m_options;
    // m_sessionhandle is const to ensure immutability.
    const Azure::Core::_internal::UniqueHandle<void*> m_sessionHandle;
    wil::unique_cert_context m_tlsClientCertificate;
 
    Azure::Core::_internal::UniqueHandle<void*> CreateSessionHandle();
    Azure::Core::_internal::UniqueHandle<void*> CreateConnectionHandle(
        Azure::Core::Url const& url,
        Azure::Core::Context const& context);
 
    std::unique_ptr<_detail::WinHttpRequest> CreateRequestHandle(
        Azure::Core::_internal::UniqueHandle<void*> const& connectionHandle,
        Azure::Core::Url const& url,
        Azure::Core::Http::HttpMethod const& method);
 
    // Callback to allow a derived transport to extract the request handle. Used for WebSocket
    // transports.
    virtual void OnUpgradedConnection(std::unique_ptr<_detail::WinHttpRequest> const& request)
    {
      m_parent->OnUpgradedConnection(request);
    };
 
  public:
    WinHttpTransportImpl(
        WinHttpTransport const* parent,
        WinHttpTransportOptions const& options = WinHttpTransportOptions());
 
    WinHttpTransportImpl(
        WinHttpTransport const* parent,
        Azure::Core::Http::Policies::TransportOptions const& options);
 
    virtual std::unique_ptr<RawResponse> Send(Request& request, Context const& context) override;
 
    // See also:
    // [Core Guidelines C.35: "A base class destructor should be either public
    // and virtual or protected and
    // non-virtual"](http://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#c35-a-base-class-destructor-should-be-either-public-and-virtual-or-protected-and-non-virtual)
    virtual ~WinHttpTransportImpl();
  };
}}}} // namespace Azure::Core::Http::_detail