root/trunk/whisperer/stream_poster.h

// Copyright (c) 2009, Whispersoft s.r.l.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Whispersoft s.r.l. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: Mihai Ianculescu

#ifndef __WHISPERER_STREAM_POSTER_H__
#define __WHISPERER_STREAM_POSTER_H__

#include <whisperlib/net/http/http_client_protocol.h>
#include "stream_request.h"

class StreamManager;

class StreamPoster {
 public:
  StreamPoster(StreamManager* manager,
      const http::ClientParams* http_client_params);
  virtual ~StreamPoster();

  bool Start(const URL& url, int retry_timeout,
             const string& user, const string& password,
             Closure* done_callback);
  void Stop();

 public:
  void Run();
  void Done();

  const URL& url() const {
    return url_;
  }
  const string& user() const {
    return user_;
  }
  const string& pass() const {
    return pass_;
  }
  int retry_timeout() const {
    return retry_timeout_;
  }

  // The poster stream request.
  class PosterRequest : public StreamRequest {
   public:
    PosterRequest(const URL& url,
                  const net::HostPort& server,
                  const string& user,
                  const string& pass,
                  const http::ClientParams* http_client_params,
                  Closure* done_callback)
        : url_(url),
          server_(server),
          user_(user),
          pass_(pass),
          http_client_params_(http_client_params),
          done_callback_(done_callback),
          request_(NULL),
          protocol_(NULL) {
    }
    virtual ~PosterRequest() {
      if (done_callback_) {
        done_callback_->Run();
      }

      delete protocol_;
      delete request_;
    }

    void Stop() {
      if (reader_) {
        reader_->Close();
      }
      if (protocol_) {
        if (protocol_->connection()) {
          protocol_->connection()->ForceClose();
        }
      }
    }

   protected:
    // called to boot the request after everything was set up
    virtual void Start();
    // called if the set up of the request fails
    virtual void Fail(http::HttpReturnCode result);
    // nothing to authenticate here..
    virtual bool Authenticate(net::UserAuthenticator* auth) {
      return true;
    }

    // called from the file reader
    virtual void ReaderProcess(io::MemoryStream* inbuf);
    virtual void ReaderClose();

    // called from the client request
    bool RequestProcess(int32 available_out);

   private:
    // The request parameters.
    URL url_;
    net::HostPort server_;
    const string user_;
    const string pass_;
    const http::ClientParams* http_client_params_;

    // The request done callback.
    Closure* done_callback_;

   protected:
    // The actual request.
    http::ClientRequest* request_;
    http::ClientStreamingProtocol* protocol_;

    friend class StreamPoster;
  };

 private:
  // The associated stream manager.
  StreamManager* manager_;
  // The HTTP client params to be used when posting.
  const http::ClientParams* http_client_params_;

  // The URL to post to.
  URL url_;
  // The timeout, in miliseconds,  at which a failed POST should be retried.
  int retry_timeout_;
  // If we need tot connect w/ a user/pass we use these :
  string user_;
  string pass_;
  // True if relayed (ie. no encoding in StreamProvider).
  bool relay_;
  // True if the outgoing frames should be wrapped into our internal protocol.
  bool wrapped_;
  // The encoder type.
  media::Stream::Type encoder_type_;
  // Params for the the audio encoder.
  media::Encoder::Audio::Params audio_params_;
  // Params for the video encoder.
  media::Encoder::Video::Params video_params_;
  // The audio port.
  int audio_port_;
  // The video port.
  int video_port_;

  // The request done callback.
  Closure* done_callback_;

  // The current request.
  PosterRequest* request_;
  // The started/stopped flags.
  bool started_;
  bool stopped_;
 private:
  DISALLOW_EVIL_CONSTRUCTORS(StreamPoster);
};

#endif   // __WHISPERER_STREAM_POSTER_H__