pagespeed/system/tcp_connection_for_testing.cc

/*
 * 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.
 */

#include "pagespeed/system/tcp_connection_for_testing.h"

#include <sys/socket.h>

#include "apr_network_io.h"
#include "base/logging.h"
#include "strings/stringpiece_utils.h"
#include "pagespeed/system/apr_thread_compatible_pool.h"

namespace net_instaweb {

TcpConnectionForTesting::TcpConnectionForTesting()
    : pool_(AprCreateThreadCompatiblePool(nullptr)), socket_(nullptr) {}

bool TcpConnectionForTesting::Connect(const GoogleString& hostname, int port) {
  CHECK(!socket_);

  apr_sockaddr_t* addr;
  if (apr_sockaddr_info_get(&addr, hostname.c_str(), APR_INET, port, 0,
                            pool_) != APR_SUCCESS) {
    return false;
  }
  if (apr_socket_create(&socket_, APR_INET, SOCK_STREAM, APR_PROTO_TCP,
                        pool_) != APR_SUCCESS) {
    return false;
  }
  return apr_socket_connect(socket_, addr) == APR_SUCCESS;
}

void TcpConnectionForTesting::Send(StringPiece data) {
  CHECK(socket_);
  apr_size_t length = data.size();
  CHECK_EQ(apr_socket_send(socket_, data.data(), &length), APR_SUCCESS);
  CHECK_EQ(length, data.size());
}

GoogleString TcpConnectionForTesting::ReadBytes(int length) {
  CHECK(socket_);

  GoogleString result;
  result.resize(length);
  int read = 0;
  while (read < length) {
    apr_size_t l = length - read;
    // 'l' is buffer size on input, amount of bytes received on output.
    CHECK(apr_socket_recv(socket_, &result[read], &l) == APR_SUCCESS);
    read += l;
  }
  return result;
}

GoogleString TcpConnectionForTesting::ReadUntil(StringPiece marker) {
  CHECK(socket_);
  GoogleString result;
  while (!strings::EndsWith(StringPiece(result), marker)) {
    char data;
    apr_size_t length = 1;
    apr_status_t status = apr_socket_recv(socket_, &data, &length);
    result += data;
    if (status == APR_EOF) {
      break;
    }
    CHECK_EQ(status, APR_SUCCESS);
  }
  return result;
}

TcpConnectionForTesting::~TcpConnectionForTesting() {
  if (socket_) {
    apr_socket_close(socket_);
  }
  apr_pool_destroy(pool_);
}

}  // namespace net_instaweb