pagespeed/system/tcp_connection_for_testing.h

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */


#ifndef PAGESPEED_SYSTEM_TCP_CONNECTION_FOR_TESTING_H_
#define PAGESPEED_SYSTEM_TCP_CONNECTION_FOR_TESTING_H_

#include "apr_network_io.h"
#include "apr_pools.h"
#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/string.h"
#include "pagespeed/kernel/base/string_util.h"

namespace net_instaweb {

// Simple TCP connection class for talking to external servers. Initiates
// connection in Connect(), closes it in destructor. Does not handle any errors
// except for connection failure, crashes with CHECK() failures on the rest.
class TcpConnectionForTesting {
 public:
  TcpConnectionForTesting();
  ~TcpConnectionForTesting();

  bool Connect(const GoogleString& hostname, int port);

  void Send(StringPiece data);

  // Reads specific amount of bytes, fais if EOF happens before.
  GoogleString ReadBytes(int length);

  // LF is included unless EOF happened before it.
  GoogleString ReadLine() {
    return ReadUntil("\n");
  }

  // CRLF is included unless EOF happened before it.
  GoogleString ReadLineCrLf() {
    return ReadUntil("\r\n");
  }

  // Returns data read, marker is included unless EOF happened before it.
  GoogleString ReadUntil(StringPiece marker);

 private:
  apr_pool_t* pool_;
  apr_socket_t* socket_;

  DISALLOW_COPY_AND_ASSIGN(TcpConnectionForTesting);
};

}  // namespace net_instaweb

#endif  // PAGESPEED_SYSTEM_TCP_CONNECTION_FOR_TESTING_H_