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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/quic/quic_socket_address_coder.h"
#include "net/base/sys_addrinfo.h"
using std::string;
namespace net {
namespace {
// For convenience, the values of these constants match the values of AF_INET
// and AF_INET6 on Linux.
const uint16 kIPv4 = 2;
const uint16 kIPv6 = 10;
} // namespace
QuicSocketAddressCoder::QuicSocketAddressCoder() {}
QuicSocketAddressCoder::QuicSocketAddressCoder(const IPEndPoint& address)
: address_(address) {}
QuicSocketAddressCoder::~QuicSocketAddressCoder() {}
string QuicSocketAddressCoder::Encode() const {
string serialized;
uint16 address_family;
switch (address_.GetSockAddrFamily()) {
case AF_INET:
address_family = kIPv4;
break;
case AF_INET6:
address_family = kIPv6;
break;
default:
return serialized;
}
serialized.append(reinterpret_cast<const char*>(&address_family),
sizeof(address_family));
serialized.append(IPAddressToPackedString(address_.address()));
uint16 port = address_.port();
serialized.append(reinterpret_cast<const char*>(&port), sizeof(port));
return serialized;
}
bool QuicSocketAddressCoder::Decode(const char* data, size_t length) {
uint16 address_family;
if (length < sizeof(address_family)) {
return false;
}
memcpy(&address_family, data, sizeof(address_family));
data += sizeof(address_family);
length -= sizeof(address_family);
size_t ip_length;
switch (address_family) {
case kIPv4:
ip_length = kIPv4AddressSize;
break;
case kIPv6:
ip_length = kIPv6AddressSize;
break;
default:
return false;
}
if (length < ip_length) {
return false;
}
IPAddressNumber ip(ip_length);
memcpy(&ip[0], data, ip_length);
data += ip_length;
length -= ip_length;
uint16 port;
if (length != sizeof(port)) {
return false;
}
memcpy(&port, data, length);
address_ = IPEndPoint(ip, port);
return true;
}
} // namespace net
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