int32 DatagramChannel::Send(const SocketInetAddress& addr, Buffer* buffer)
{
char* raw = const_cast<char*>(buffer->GetRawReadBuffer());
uint32 len = buffer->ReadableBytes();
int ret = ::sendto(GetSocketFD(addr.GetDomain()), raw, len, 0,
&(addr.GetRawSockAddr()), addr.GetRawSockAddrSize());
if (ret > 0)
{
buffer->AdvanceReadIndex(len);
}
return ret;
}
bool SocketChannel::DoConnect(Address* remote)
{
if (NULL == remote)
{
return false;
}
SocketInetAddress addr;
if (InstanceOf<SocketHostAddress>(remote).OK)
{
SocketHostAddress* host_addr = static_cast<SocketHostAddress*>(remote);
addr = get_inet_address(host_addr->GetHost(), host_addr->GetPort());
}
else if (InstanceOf<SocketInetAddress>(remote).OK)
{
SocketInetAddress* inet_addr = static_cast<SocketInetAddress*>(remote);
addr = (*inet_addr);
}
else if (InstanceOf<SocketUnixAddress>(remote).OK)
{
SocketUnixAddress* unix_addr = static_cast<SocketUnixAddress*>(remote);
addr = get_inet_address(*unix_addr);
}
else
{
return false;
}
int fd = GetSocketFD(addr.GetDomain());
int ret = ::connect(fd, const_cast<sockaddr*>(&(addr.GetRawSockAddr())), addr.GetRawSockAddrSize());
if (ret < 0)
{
int e = errno;
if (((e) == EINTR || (e) == EINPROGRESS))
{
//connecting
}
else
{
ERROR_LOG("Failed to connect remote server for reason:%s", strerror(e));
return false;
}
}
m_state = SOCK_CONNECTING;
//DEBUG_LOG("###Switch to %d", m_state);
return true;
}
bool SocketChannel::DoBind(Address* local)
{
if (NULL == local)
{
return false;
}
SocketInetAddress addr;
if (InstanceOf<SocketHostAddress>(local).OK)
{
SocketHostAddress* host_addr = static_cast<SocketHostAddress*>(local);
addr = get_inet_address(host_addr->GetHost(), host_addr->GetPort());
}
else if (InstanceOf<SocketInetAddress>(local).OK)
{
SocketInetAddress* inet_addr = static_cast<SocketInetAddress*>(local);
addr = (*inet_addr);
}
else if (InstanceOf<SocketUnixAddress>(local).OK)
{
SocketUnixAddress* unix_addr = (SocketUnixAddress*) local;
unlink(unix_addr->GetPath().c_str()); // in case it already exists
addr = get_inet_address(*unix_addr);
}
else
{
return false;
}
if (addr.IsUnix())
{
struct sockaddr_un* pun = (struct sockaddr_un*) &(addr.GetRawSockAddr());
DEBUG_LOG("Bind on %s", pun->sun_path);
}
int fd = GetSocketFD(addr.GetDomain());
if (0 == ::bind(fd, &(addr.GetRawSockAddr()), addr.GetRawSockAddrSize()))
{
return true;
}
int e = errno;
ERROR_LOG("Failed to bind address for reason:%s", strerror(e));
return false;
}
bool ServerSocketChannel::DoBind(Address* local)
{
if (m_fd > 0)
{
return true;
}
int on = 1;
SocketInetAddress addr;
if (InstanceOf<SocketHostAddress>(local).OK)
{
SocketHostAddress* host_addr = (SocketHostAddress*) local;
addr = get_inet_address(host_addr->GetHost(), host_addr->GetPort());
} else if (InstanceOf<SocketInetAddress>(local).OK)
{
SocketInetAddress* inet_addr = (SocketInetAddress*) local;
addr = (*inet_addr);
} else if (InstanceOf<SocketUnixAddress>(local).OK)
{
SocketUnixAddress* unix_addr = (SocketUnixAddress*) local;
int ret = unlink(unix_addr->GetPath().c_str()); // in case it already exists
if (ret == -1)
{
int e = errno;
ERROR_LOG(
"unlink %s failed:%s", unix_addr->GetPath().c_str(), strerror(e));
}
addr = get_inet_address(*unix_addr);
} else
{
return false;
}
int family = addr.GetRawSockAddr().sa_family;
int fd = ::socket(family, SOCK_STREAM, 0);
if (fd < 0)
{
return false;
}
if (make_fd_nonblocking(fd) < 0)
{
::close(fd);
return false;
}
if (!addr.IsUnix())
{
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) == -1)
{
::close(fd);
return false;
}
} else
{
struct sockaddr_un* pun = (struct sockaddr_un*) &(addr.GetRawSockAddr());
DEBUG_LOG("Bind on %s", pun->sun_path);
// int nZero = 0;
// setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char *) &nZero, sizeof(nZero));
// setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char *) &nZero, sizeof(int));
}
//setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void*) &on, sizeof(on));
if (::bind(fd, (struct sockaddr*) &(addr.GetRawSockAddr()),
addr.GetRawSockAddrSize()) == -1)
{
int e = errno;
ERROR_LOG("Failed to bind address for reason:%s", strerror(e));
::close(fd);
return false;
}
if (::listen(fd, 511) == -1)
{ /* the magic 511 constant is from nginx */
int e = errno;
ERROR_LOG("Failed to listen for reason:%s", strerror(e));
::close(fd);
return false;
}
if (aeCreateFileEvent(GetService().GetRawEventLoop(), fd, AE_READABLE,
Channel::IOEventCallback, this) == AE_ERR)
{
::close(fd);
return false;
}
m_fd = fd;
return true;
}