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authorRemko Tronçon <git@el-tramo.be>2010-02-11 12:14:00 (GMT)
committerRemko Tronçon <git@el-tramo.be>2010-02-11 12:14:00 (GMT)
commit0efa7c32aaf21a29b42b5926cc116007056843be (patch)
tree882f663a5dd0e65694bf6077b71086dd77fd7ff8 /3rdParty/Boost/boost/asio/detail/socket_ops.hpp
parent1d20eabbc32274b491b4c2bedf73d19933d97bfd (diff)
downloadswift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.zip
swift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.tar.bz2
Moved some modules into separate git modules.
Diffstat (limited to '3rdParty/Boost/boost/asio/detail/socket_ops.hpp')
m---------3rdParty/Boost0
-rw-r--r--3rdParty/Boost/boost/asio/detail/socket_ops.hpp1913
2 files changed, 0 insertions, 1913 deletions
diff --git a/3rdParty/Boost b/3rdParty/Boost
new file mode 160000
+Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79
diff --git a/3rdParty/Boost/boost/asio/detail/socket_ops.hpp b/3rdParty/Boost/boost/asio/detail/socket_ops.hpp
deleted file mode 100644
index 4969017..0000000
--- a/3rdParty/Boost/boost/asio/detail/socket_ops.hpp
+++ /dev/null
@@ -1,1913 +0,0 @@
-//
-// socket_ops.hpp
-// ~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef BOOST_ASIO_DETAIL_SOCKET_OPS_HPP
-#define BOOST_ASIO_DETAIL_SOCKET_OPS_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include <boost/asio/detail/push_options.hpp>
-
-#include <boost/asio/detail/push_options.hpp>
-#include <boost/config.hpp>
-#include <boost/assert.hpp>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <cerrno>
-#include <boost/detail/workaround.hpp>
-#include <new>
-#include <boost/asio/detail/pop_options.hpp>
-
-#include <boost/asio/error.hpp>
-#include <boost/asio/detail/socket_types.hpp>
-
-namespace boost {
-namespace asio {
-namespace detail {
-namespace socket_ops {
-
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-struct msghdr { int msg_namelen; };
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-
-#if defined(__hpux)
-// HP-UX doesn't declare these functions extern "C", so they are declared again
-// here to avoid linker errors about undefined symbols.
-extern "C" char* if_indextoname(unsigned int, char*);
-extern "C" unsigned int if_nametoindex(const char*);
-#endif // defined(__hpux)
-
-inline void clear_error(boost::system::error_code& ec)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- WSASetLastError(0);
-#else
- errno = 0;
-#endif
- ec = boost::system::error_code();
-}
-
-template <typename ReturnType>
-inline ReturnType error_wrapper(ReturnType return_value,
- boost::system::error_code& ec)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- ec = boost::system::error_code(WSAGetLastError(),
- boost::asio::error::get_system_category());
-#else
- ec = boost::system::error_code(errno,
- boost::asio::error::get_system_category());
-#endif
- return return_value;
-}
-
-template <typename SockLenType>
-inline socket_type call_accept(SockLenType msghdr::*,
- socket_type s, socket_addr_type* addr, std::size_t* addrlen)
-{
- SockLenType tmp_addrlen = addrlen ? (SockLenType)*addrlen : 0;
- socket_type result = ::accept(s, addr, addrlen ? &tmp_addrlen : 0);
- if (addrlen)
- *addrlen = (std::size_t)tmp_addrlen;
- return result;
-}
-
-inline socket_type accept(socket_type s, socket_addr_type* addr,
- std::size_t* addrlen, boost::system::error_code& ec)
-{
- clear_error(ec);
-
- socket_type new_s = error_wrapper(call_accept(
- &msghdr::msg_namelen, s, addr, addrlen), ec);
- if (new_s == invalid_socket)
- return new_s;
-
-#if defined(__MACH__) && defined(__APPLE__) || defined(__FreeBSD__)
- int optval = 1;
- int result = error_wrapper(::setsockopt(new_s,
- SOL_SOCKET, SO_NOSIGPIPE, &optval, sizeof(optval)), ec);
- if (result != 0)
- {
- ::close(new_s);
- return invalid_socket;
- }
-#endif
-
- clear_error(ec);
- return new_s;
-}
-
-template <typename SockLenType>
-inline int call_bind(SockLenType msghdr::*,
- socket_type s, const socket_addr_type* addr, std::size_t addrlen)
-{
- return ::bind(s, addr, (SockLenType)addrlen);
-}
-
-inline int bind(socket_type s, const socket_addr_type* addr,
- std::size_t addrlen, boost::system::error_code& ec)
-{
- clear_error(ec);
- int result = error_wrapper(call_bind(
- &msghdr::msg_namelen, s, addr, addrlen), ec);
- if (result == 0)
- clear_error(ec);
- return result;
-}
-
-inline int close(socket_type s, boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- int result = error_wrapper(::closesocket(s), ec);
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- int result = error_wrapper(::close(s), ec);
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- if (result == 0)
- clear_error(ec);
- return result;
-}
-
-inline int shutdown(socket_type s, int what, boost::system::error_code& ec)
-{
- clear_error(ec);
- int result = error_wrapper(::shutdown(s, what), ec);
- if (result == 0)
- clear_error(ec);
- return result;
-}
-
-template <typename SockLenType>
-inline int call_connect(SockLenType msghdr::*,
- socket_type s, const socket_addr_type* addr, std::size_t addrlen)
-{
- return ::connect(s, addr, (SockLenType)addrlen);
-}
-
-inline int connect(socket_type s, const socket_addr_type* addr,
- std::size_t addrlen, boost::system::error_code& ec)
-{
- clear_error(ec);
- int result = error_wrapper(call_connect(
- &msghdr::msg_namelen, s, addr, addrlen), ec);
- if (result == 0)
- clear_error(ec);
- return result;
-}
-
-inline int socketpair(int af, int type, int protocol,
- socket_type sv[2], boost::system::error_code& ec)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- (void)(af);
- (void)(type);
- (void)(protocol);
- (void)(sv);
- ec = boost::asio::error::operation_not_supported;
- return -1;
-#else
- clear_error(ec);
- int result = error_wrapper(::socketpair(af, type, protocol, sv), ec);
- if (result == 0)
- clear_error(ec);
- return result;
-#endif
-}
-
-inline int listen(socket_type s, int backlog, boost::system::error_code& ec)
-{
- clear_error(ec);
- int result = error_wrapper(::listen(s, backlog), ec);
- if (result == 0)
- clear_error(ec);
- return result;
-}
-
-inline void init_buf_iov_base(void*& base, void* addr)
-{
- base = addr;
-}
-
-template <typename T>
-inline void init_buf_iov_base(T& base, void* addr)
-{
- base = static_cast<T>(addr);
-}
-
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-typedef WSABUF buf;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-typedef iovec buf;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-
-inline void init_buf(buf& b, void* data, size_t size)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- b.buf = static_cast<char*>(data);
- b.len = static_cast<u_long>(size);
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- init_buf_iov_base(b.iov_base, data);
- b.iov_len = size;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline void init_buf(buf& b, const void* data, size_t size)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- b.buf = static_cast<char*>(const_cast<void*>(data));
- b.len = static_cast<u_long>(size);
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- init_buf_iov_base(b.iov_base, const_cast<void*>(data));
- b.iov_len = size;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline void init_msghdr_msg_name(void*& name, socket_addr_type* addr)
-{
- name = addr;
-}
-
-inline void init_msghdr_msg_name(void*& name, const socket_addr_type* addr)
-{
- name = const_cast<socket_addr_type*>(addr);
-}
-
-template <typename T>
-inline void init_msghdr_msg_name(T& name, socket_addr_type* addr)
-{
- name = reinterpret_cast<T>(addr);
-}
-
-template <typename T>
-inline void init_msghdr_msg_name(T& name, const socket_addr_type* addr)
-{
- name = reinterpret_cast<T>(const_cast<socket_addr_type*>(addr));
-}
-
-inline int recv(socket_type s, buf* bufs, size_t count, int flags,
- boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- // Receive some data.
- DWORD recv_buf_count = static_cast<DWORD>(count);
- DWORD bytes_transferred = 0;
- DWORD recv_flags = flags;
- int result = error_wrapper(::WSARecv(s, bufs,
- recv_buf_count, &bytes_transferred, &recv_flags, 0, 0), ec);
- if (result != 0)
- return -1;
- clear_error(ec);
- return bytes_transferred;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- msghdr msg = msghdr();
- msg.msg_iov = bufs;
- msg.msg_iovlen = count;
- int result = error_wrapper(::recvmsg(s, &msg, flags), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline int recvfrom(socket_type s, buf* bufs, size_t count, int flags,
- socket_addr_type* addr, std::size_t* addrlen,
- boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- // Receive some data.
- DWORD recv_buf_count = static_cast<DWORD>(count);
- DWORD bytes_transferred = 0;
- DWORD recv_flags = flags;
- int tmp_addrlen = (int)*addrlen;
- int result = error_wrapper(::WSARecvFrom(s, bufs, recv_buf_count,
- &bytes_transferred, &recv_flags, addr, &tmp_addrlen, 0, 0), ec);
- *addrlen = (std::size_t)tmp_addrlen;
- if (result != 0)
- return -1;
- clear_error(ec);
- return bytes_transferred;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- msghdr msg = msghdr();
- init_msghdr_msg_name(msg.msg_name, addr);
- msg.msg_namelen = *addrlen;
- msg.msg_iov = bufs;
- msg.msg_iovlen = count;
- int result = error_wrapper(::recvmsg(s, &msg, flags), ec);
- *addrlen = msg.msg_namelen;
- if (result >= 0)
- clear_error(ec);
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline int send(socket_type s, const buf* bufs, size_t count, int flags,
- boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- // Send the data.
- DWORD send_buf_count = static_cast<DWORD>(count);
- DWORD bytes_transferred = 0;
- DWORD send_flags = flags;
- int result = error_wrapper(::WSASend(s, const_cast<buf*>(bufs),
- send_buf_count, &bytes_transferred, send_flags, 0, 0), ec);
- if (result != 0)
- return -1;
- clear_error(ec);
- return bytes_transferred;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- msghdr msg = msghdr();
- msg.msg_iov = const_cast<buf*>(bufs);
- msg.msg_iovlen = count;
-#if defined(__linux__)
- flags |= MSG_NOSIGNAL;
-#endif // defined(__linux__)
- int result = error_wrapper(::sendmsg(s, &msg, flags), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline int sendto(socket_type s, const buf* bufs, size_t count, int flags,
- const socket_addr_type* addr, std::size_t addrlen,
- boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- // Send the data.
- DWORD send_buf_count = static_cast<DWORD>(count);
- DWORD bytes_transferred = 0;
- int result = error_wrapper(::WSASendTo(s, const_cast<buf*>(bufs),
- send_buf_count, &bytes_transferred, flags, addr,
- static_cast<int>(addrlen), 0, 0), ec);
- if (result != 0)
- return -1;
- clear_error(ec);
- return bytes_transferred;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- msghdr msg = msghdr();
- init_msghdr_msg_name(msg.msg_name, addr);
- msg.msg_namelen = addrlen;
- msg.msg_iov = const_cast<buf*>(bufs);
- msg.msg_iovlen = count;
-#if defined(__linux__)
- flags |= MSG_NOSIGNAL;
-#endif // defined(__linux__)
- int result = error_wrapper(::sendmsg(s, &msg, flags), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline socket_type socket(int af, int type, int protocol,
- boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- socket_type s = error_wrapper(::WSASocket(af, type, protocol, 0, 0,
- WSA_FLAG_OVERLAPPED), ec);
- if (s == invalid_socket)
- return s;
-
- if (af == AF_INET6)
- {
- // Try to enable the POSIX default behaviour of having IPV6_V6ONLY set to
- // false. This will only succeed on Windows Vista and later versions of
- // Windows, where a dual-stack IPv4/v6 implementation is available.
- DWORD optval = 0;
- ::setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
- reinterpret_cast<const char*>(&optval), sizeof(optval));
- }
-
- clear_error(ec);
-
- return s;
-#elif defined(__MACH__) && defined(__APPLE__) || defined(__FreeBSD__)
- socket_type s = error_wrapper(::socket(af, type, protocol), ec);
- if (s == invalid_socket)
- return s;
-
- int optval = 1;
- int result = error_wrapper(::setsockopt(s,
- SOL_SOCKET, SO_NOSIGPIPE, &optval, sizeof(optval)), ec);
- if (result != 0)
- {
- ::close(s);
- return invalid_socket;
- }
-
- return s;
-#else
- int s = error_wrapper(::socket(af, type, protocol), ec);
- if (s >= 0)
- clear_error(ec);
- return s;
-#endif
-}
-
-template <typename SockLenType>
-inline int call_setsockopt(SockLenType msghdr::*,
- socket_type s, int level, int optname,
- const void* optval, std::size_t optlen)
-{
- return ::setsockopt(s, level, optname,
- (const char*)optval, (SockLenType)optlen);
-}
-
-inline int setsockopt(socket_type s, int level, int optname,
- const void* optval, std::size_t optlen, boost::system::error_code& ec)
-{
- if (level == custom_socket_option_level && optname == always_fail_option)
- {
- ec = boost::asio::error::invalid_argument;
- return -1;
- }
-
-#if defined(__BORLANDC__)
- // Mysteriously, using the getsockopt and setsockopt functions directly with
- // Borland C++ results in incorrect values being set and read. The bug can be
- // worked around by using function addresses resolved with GetProcAddress.
- if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
- {
- typedef int (WSAAPI *sso_t)(SOCKET, int, int, const char*, int);
- if (sso_t sso = (sso_t)::GetProcAddress(winsock_module, "setsockopt"))
- {
- clear_error(ec);
- return error_wrapper(sso(s, level, optname,
- reinterpret_cast<const char*>(optval),
- static_cast<int>(optlen)), ec);
- }
- }
- ec = boost::asio::error::fault;
- return -1;
-#else // defined(__BORLANDC__)
- clear_error(ec);
- int result = error_wrapper(call_setsockopt(&msghdr::msg_namelen,
- s, level, optname, optval, optlen), ec);
- if (result == 0)
- clear_error(ec);
- return result;
-#endif // defined(__BORLANDC__)
-}
-
-template <typename SockLenType>
-inline int call_getsockopt(SockLenType msghdr::*,
- socket_type s, int level, int optname,
- void* optval, std::size_t* optlen)
-{
- SockLenType tmp_optlen = (SockLenType)*optlen;
- int result = ::getsockopt(s, level, optname, (char*)optval, &tmp_optlen);
- *optlen = (std::size_t)tmp_optlen;
- return result;
-}
-
-inline int getsockopt(socket_type s, int level, int optname, void* optval,
- size_t* optlen, boost::system::error_code& ec)
-{
- if (level == custom_socket_option_level && optname == always_fail_option)
- {
- ec = boost::asio::error::invalid_argument;
- return -1;
- }
-
-#if defined(__BORLANDC__)
- // Mysteriously, using the getsockopt and setsockopt functions directly with
- // Borland C++ results in incorrect values being set and read. The bug can be
- // worked around by using function addresses resolved with GetProcAddress.
- if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
- {
- typedef int (WSAAPI *gso_t)(SOCKET, int, int, char*, int*);
- if (gso_t gso = (gso_t)::GetProcAddress(winsock_module, "getsockopt"))
- {
- clear_error(ec);
- int tmp_optlen = static_cast<int>(*optlen);
- int result = error_wrapper(gso(s, level, optname,
- reinterpret_cast<char*>(optval), &tmp_optlen), ec);
- *optlen = static_cast<size_t>(tmp_optlen);
- if (result != 0 && level == IPPROTO_IPV6 && optname == IPV6_V6ONLY
- && ec.value() == WSAENOPROTOOPT && *optlen == sizeof(DWORD))
- {
- // Dual-stack IPv4/v6 sockets, and the IPV6_V6ONLY socket option, are
- // only supported on Windows Vista and later. To simplify program logic
- // we will fake success of getting this option and specify that the
- // value is non-zero (i.e. true). This corresponds to the behavior of
- // IPv6 sockets on Windows platforms pre-Vista.
- *static_cast<DWORD*>(optval) = 1;
- clear_error(ec);
- }
- return result;
- }
- }
- ec = boost::asio::error::fault;
- return -1;
-#elif defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- clear_error(ec);
- int result = error_wrapper(call_getsockopt(&msghdr::msg_namelen,
- s, level, optname, optval, optlen), ec);
- if (result != 0 && level == IPPROTO_IPV6 && optname == IPV6_V6ONLY
- && ec.value() == WSAENOPROTOOPT && *optlen == sizeof(DWORD))
- {
- // Dual-stack IPv4/v6 sockets, and the IPV6_V6ONLY socket option, are only
- // supported on Windows Vista and later. To simplify program logic we will
- // fake success of getting this option and specify that the value is
- // non-zero (i.e. true). This corresponds to the behavior of IPv6 sockets
- // on Windows platforms pre-Vista.
- *static_cast<DWORD*>(optval) = 1;
- clear_error(ec);
- }
- if (result == 0)
- clear_error(ec);
- return result;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- clear_error(ec);
- int result = error_wrapper(call_getsockopt(&msghdr::msg_namelen,
- s, level, optname, optval, optlen), ec);
-#if defined(__linux__)
- if (result == 0 && level == SOL_SOCKET && *optlen == sizeof(int)
- && (optname == SO_SNDBUF || optname == SO_RCVBUF))
- {
- // On Linux, setting SO_SNDBUF or SO_RCVBUF to N actually causes the kernel
- // to set the buffer size to N*2. Linux puts additional stuff into the
- // buffers so that only about half is actually available to the application.
- // The retrieved value is divided by 2 here to make it appear as though the
- // correct value has been set.
- *static_cast<int*>(optval) /= 2;
- }
-#endif // defined(__linux__)
- if (result == 0)
- clear_error(ec);
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-template <typename SockLenType>
-inline int call_getpeername(SockLenType msghdr::*,
- socket_type s, socket_addr_type* addr, std::size_t* addrlen)
-{
- SockLenType tmp_addrlen = (SockLenType)*addrlen;
- int result = ::getpeername(s, addr, &tmp_addrlen);
- *addrlen = (std::size_t)tmp_addrlen;
- return result;
-}
-
-inline int getpeername(socket_type s, socket_addr_type* addr,
- std::size_t* addrlen, boost::system::error_code& ec)
-{
- clear_error(ec);
- int result = error_wrapper(call_getpeername(
- &msghdr::msg_namelen, s, addr, addrlen), ec);
- if (result == 0)
- clear_error(ec);
- return result;
-}
-
-template <typename SockLenType>
-inline int call_getsockname(SockLenType msghdr::*,
- socket_type s, socket_addr_type* addr, std::size_t* addrlen)
-{
- SockLenType tmp_addrlen = (SockLenType)*addrlen;
- int result = ::getsockname(s, addr, &tmp_addrlen);
- *addrlen = (std::size_t)tmp_addrlen;
- return result;
-}
-
-inline int getsockname(socket_type s, socket_addr_type* addr,
- std::size_t* addrlen, boost::system::error_code& ec)
-{
- clear_error(ec);
- int result = error_wrapper(call_getsockname(
- &msghdr::msg_namelen, s, addr, addrlen), ec);
- if (result == 0)
- clear_error(ec);
- return result;
-}
-
-inline int ioctl(socket_type s, long cmd, ioctl_arg_type* arg,
- boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- int result = error_wrapper(::ioctlsocket(s, cmd, arg), ec);
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- int result = error_wrapper(::ioctl(s, cmd, arg), ec);
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- if (result >= 0)
- clear_error(ec);
- return result;
-}
-
-inline int select(int nfds, fd_set* readfds, fd_set* writefds,
- fd_set* exceptfds, timeval* timeout, boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- if (!readfds && !writefds && !exceptfds && timeout)
- {
- DWORD milliseconds = timeout->tv_sec * 1000 + timeout->tv_usec / 1000;
- if (milliseconds == 0)
- milliseconds = 1; // Force context switch.
- ::Sleep(milliseconds);
- ec = boost::system::error_code();
- return 0;
- }
-
- // The select() call allows timeout values measured in microseconds, but the
- // system clock (as wrapped by boost::posix_time::microsec_clock) typically
- // has a resolution of 10 milliseconds. This can lead to a spinning select
- // reactor, meaning increased CPU usage, when waiting for the earliest
- // scheduled timeout if it's less than 10 milliseconds away. To avoid a tight
- // spin we'll use a minimum timeout of 1 millisecond.
- if (timeout && timeout->tv_sec == 0
- && timeout->tv_usec > 0 && timeout->tv_usec < 1000)
- timeout->tv_usec = 1000;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-
-#if defined(__hpux) && defined(__HP_aCC)
- timespec ts;
- ts.tv_sec = timeout ? timeout->tv_sec : 0;
- ts.tv_nsec = timeout ? timeout->tv_usec * 1000 : 0;
- return error_wrapper(::pselect(nfds, readfds,
- writefds, exceptfds, timeout ? &ts : 0, 0), ec);
-#else
- int result = error_wrapper(::select(nfds, readfds,
- writefds, exceptfds, timeout), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#endif
-}
-
-inline int poll_read(socket_type s, boost::system::error_code& ec)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- FD_SET fds;
- FD_ZERO(&fds);
- FD_SET(s, &fds);
- clear_error(ec);
- int result = error_wrapper(::select(s, &fds, 0, 0, 0), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- pollfd fds;
- fds.fd = s;
- fds.events = POLLIN;
- fds.revents = 0;
- clear_error(ec);
- int result = error_wrapper(::poll(&fds, 1, -1), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline int poll_write(socket_type s, boost::system::error_code& ec)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- FD_SET fds;
- FD_ZERO(&fds);
- FD_SET(s, &fds);
- clear_error(ec);
- int result = error_wrapper(::select(s, 0, &fds, 0, 0), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- pollfd fds;
- fds.fd = s;
- fds.events = POLLOUT;
- fds.revents = 0;
- clear_error(ec);
- int result = error_wrapper(::poll(&fds, 1, -1), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline int poll_connect(socket_type s, boost::system::error_code& ec)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- FD_SET write_fds;
- FD_ZERO(&write_fds);
- FD_SET(s, &write_fds);
- FD_SET except_fds;
- FD_ZERO(&except_fds);
- FD_SET(s, &except_fds);
- clear_error(ec);
- int result = error_wrapper(::select(s, 0, &write_fds, &except_fds, 0), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- pollfd fds;
- fds.fd = s;
- fds.events = POLLOUT;
- fds.revents = 0;
- clear_error(ec);
- int result = error_wrapper(::poll(&fds, 1, -1), ec);
- if (result >= 0)
- clear_error(ec);
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline const char* inet_ntop(int af, const void* src, char* dest, size_t length,
- unsigned long scope_id, boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- using namespace std; // For memcpy.
-
- if (af != AF_INET && af != AF_INET6)
- {
- ec = boost::asio::error::address_family_not_supported;
- return 0;
- }
-
- union
- {
- socket_addr_type base;
- sockaddr_storage_type storage;
- sockaddr_in4_type v4;
- sockaddr_in6_type v6;
- } address;
- DWORD address_length;
- if (af == AF_INET)
- {
- address_length = sizeof(sockaddr_in4_type);
- address.v4.sin_family = AF_INET;
- address.v4.sin_port = 0;
- memcpy(&address.v4.sin_addr, src, sizeof(in4_addr_type));
- }
- else // AF_INET6
- {
- address_length = sizeof(sockaddr_in6_type);
- address.v6.sin6_family = AF_INET6;
- address.v6.sin6_port = 0;
- address.v6.sin6_flowinfo = 0;
- address.v6.sin6_scope_id = scope_id;
- memcpy(&address.v6.sin6_addr, src, sizeof(in6_addr_type));
- }
-
- DWORD string_length = static_cast<DWORD>(length);
-#if defined(BOOST_NO_ANSI_APIS)
- LPWSTR string_buffer = (LPWSTR)_alloca(length * sizeof(WCHAR));
- int result = error_wrapper(::WSAAddressToStringW(&address.base,
- address_length, 0, string_buffer, &string_length), ec);
- ::WideCharToMultiByte(CP_ACP, 0, string_buffer, -1, dest, length, 0, 0);
-#else
- int result = error_wrapper(::WSAAddressToStringA(
- &address.base, address_length, 0, dest, &string_length), ec);
-#endif
-
- // Windows may set error code on success.
- if (result != socket_error_retval)
- clear_error(ec);
-
- // Windows may not set an error code on failure.
- else if (result == socket_error_retval && !ec)
- ec = boost::asio::error::invalid_argument;
-
- return result == socket_error_retval ? 0 : dest;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- const char* result = error_wrapper(::inet_ntop(af, src, dest, length), ec);
- if (result == 0 && !ec)
- ec = boost::asio::error::invalid_argument;
- if (result != 0 && af == AF_INET6 && scope_id != 0)
- {
- using namespace std; // For strcat and sprintf.
- char if_name[IF_NAMESIZE + 1] = "%";
- const in6_addr_type* ipv6_address = static_cast<const in6_addr_type*>(src);
- bool is_link_local = IN6_IS_ADDR_LINKLOCAL(ipv6_address);
- if (!is_link_local || if_indextoname(scope_id, if_name + 1) == 0)
- sprintf(if_name + 1, "%lu", scope_id);
- strcat(dest, if_name);
- }
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline int inet_pton(int af, const char* src, void* dest,
- unsigned long* scope_id, boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- using namespace std; // For memcpy and strcmp.
-
- if (af != AF_INET && af != AF_INET6)
- {
- ec = boost::asio::error::address_family_not_supported;
- return -1;
- }
-
- union
- {
- socket_addr_type base;
- sockaddr_storage_type storage;
- sockaddr_in4_type v4;
- sockaddr_in6_type v6;
- } address;
- int address_length = sizeof(sockaddr_storage_type);
-#if defined(BOOST_NO_ANSI_APIS)
- int num_wide_chars = strlen(src) + 1;
- LPWSTR wide_buffer = (LPWSTR)_alloca(num_wide_chars * sizeof(WCHAR));
- ::MultiByteToWideChar(CP_ACP, 0, src, -1, wide_buffer, num_wide_chars);
- int result = error_wrapper(::WSAStringToAddressW(
- wide_buffer, af, 0, &address.base, &address_length), ec);
-#else
- int result = error_wrapper(::WSAStringToAddressA(
- const_cast<char*>(src), af, 0, &address.base, &address_length), ec);
-#endif
-
- if (af == AF_INET)
- {
- if (result != socket_error_retval)
- {
- memcpy(dest, &address.v4.sin_addr, sizeof(in4_addr_type));
- clear_error(ec);
- }
- else if (strcmp(src, "255.255.255.255") == 0)
- {
- static_cast<in4_addr_type*>(dest)->s_addr = INADDR_NONE;
- clear_error(ec);
- }
- }
- else // AF_INET6
- {
- if (result != socket_error_retval)
- {
- memcpy(dest, &address.v6.sin6_addr, sizeof(in6_addr_type));
- if (scope_id)
- *scope_id = address.v6.sin6_scope_id;
- clear_error(ec);
- }
- }
-
- // Windows may not set an error code on failure.
- if (result == socket_error_retval && !ec)
- ec = boost::asio::error::invalid_argument;
-
- if (result != socket_error_retval)
- clear_error(ec);
-
- return result == socket_error_retval ? -1 : 1;
-#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- int result = error_wrapper(::inet_pton(af, src, dest), ec);
- if (result <= 0 && !ec)
- ec = boost::asio::error::invalid_argument;
- if (result > 0 && af == AF_INET6 && scope_id)
- {
- using namespace std; // For strchr and atoi.
- *scope_id = 0;
- if (const char* if_name = strchr(src, '%'))
- {
- in6_addr_type* ipv6_address = static_cast<in6_addr_type*>(dest);
- bool is_link_local = IN6_IS_ADDR_LINKLOCAL(ipv6_address);
- if (is_link_local)
- *scope_id = if_nametoindex(if_name + 1);
- if (*scope_id == 0)
- *scope_id = atoi(if_name + 1);
- }
- }
- return result;
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-}
-
-inline int gethostname(char* name, int namelen, boost::system::error_code& ec)
-{
- clear_error(ec);
- int result = error_wrapper(::gethostname(name, namelen), ec);
-#if defined(BOOST_WINDOWS)
- if (result == 0)
- clear_error(ec);
-#endif
- return result;
-}
-
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__) \
- || defined(__MACH__) && defined(__APPLE__)
-
-// The following functions are only needed for emulation of getaddrinfo and
-// getnameinfo.
-
-inline boost::system::error_code translate_netdb_error(int error)
-{
- switch (error)
- {
- case 0:
- return boost::system::error_code();
- case HOST_NOT_FOUND:
- return boost::asio::error::host_not_found;
- case TRY_AGAIN:
- return boost::asio::error::host_not_found_try_again;
- case NO_RECOVERY:
- return boost::asio::error::no_recovery;
- case NO_DATA:
- return boost::asio::error::no_data;
- default:
- BOOST_ASSERT(false);
- return boost::asio::error::invalid_argument;
- }
-}
-
-inline hostent* gethostbyaddr(const char* addr, int length, int af,
- hostent* result, char* buffer, int buflength, boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- (void)(buffer);
- (void)(buflength);
- hostent* retval = error_wrapper(::gethostbyaddr(addr, length, af), ec);
- if (!retval)
- return 0;
- clear_error(ec);
- *result = *retval;
- return retval;
-#elif defined(__sun) || defined(__QNX__)
- int error = 0;
- hostent* retval = error_wrapper(::gethostbyaddr_r(addr, length, af, result,
- buffer, buflength, &error), ec);
- if (error)
- ec = translate_netdb_error(error);
- return retval;
-#elif defined(__MACH__) && defined(__APPLE__)
- (void)(buffer);
- (void)(buflength);
- int error = 0;
- hostent* retval = error_wrapper(::getipnodebyaddr(
- addr, length, af, &error), ec);
- if (error)
- ec = translate_netdb_error(error);
- if (!retval)
- return 0;
- *result = *retval;
- return retval;
-#else
- hostent* retval = 0;
- int error = 0;
- error_wrapper(::gethostbyaddr_r(addr, length, af, result, buffer,
- buflength, &retval, &error), ec);
- if (error)
- ec = translate_netdb_error(error);
- return retval;
-#endif
-}
-
-inline hostent* gethostbyname(const char* name, int af, struct hostent* result,
- char* buffer, int buflength, int ai_flags, boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- (void)(buffer);
- (void)(buflength);
- (void)(ai_flags);
- if (af != AF_INET)
- {
- ec = boost::asio::error::address_family_not_supported;
- return 0;
- }
- hostent* retval = error_wrapper(::gethostbyname(name), ec);
- if (!retval)
- return 0;
- clear_error(ec);
- *result = *retval;
- return result;
-#elif defined(__sun) || defined(__QNX__)
- (void)(ai_flags);
- if (af != AF_INET)
- {
- ec = boost::asio::error::address_family_not_supported;
- return 0;
- }
- int error = 0;
- hostent* retval = error_wrapper(::gethostbyname_r(name, result, buffer,
- buflength, &error), ec);
- if (error)
- ec = translate_netdb_error(error);
- return retval;
-#elif defined(__MACH__) && defined(__APPLE__)
- (void)(buffer);
- (void)(buflength);
- int error = 0;
- hostent* retval = error_wrapper(::getipnodebyname(
- name, af, ai_flags, &error), ec);
- if (error)
- ec = translate_netdb_error(error);
- if (!retval)
- return 0;
- *result = *retval;
- return retval;
-#else
- (void)(ai_flags);
- if (af != AF_INET)
- {
- ec = boost::asio::error::address_family_not_supported;
- return 0;
- }
- hostent* retval = 0;
- int error = 0;
- error_wrapper(::gethostbyname_r(name, result,
- buffer, buflength, &retval, &error), ec);
- if (error)
- ec = translate_netdb_error(error);
- return retval;
-#endif
-}
-
-inline void freehostent(hostent* h)
-{
-#if defined(__MACH__) && defined(__APPLE__)
- if (h)
- ::freehostent(h);
-#else
- (void)(h);
-#endif
-}
-
-// Emulation of getaddrinfo based on implementation in:
-// Stevens, W. R., UNIX Network Programming Vol. 1, 2nd Ed., Prentice-Hall 1998.
-
-struct gai_search
-{
- const char* host;
- int family;
-};
-
-inline int gai_nsearch(const char* host,
- const addrinfo_type* hints, gai_search (&search)[2])
-{
- int search_count = 0;
- if (host == 0 || host[0] == '\0')
- {
- if (hints->ai_flags & AI_PASSIVE)
- {
- // No host and AI_PASSIVE implies wildcard bind.
- switch (hints->ai_family)
- {
- case AF_INET:
- search[search_count].host = "0.0.0.0";
- search[search_count].family = AF_INET;
- ++search_count;
- break;
- case AF_INET6:
- search[search_count].host = "0::0";
- search[search_count].family = AF_INET6;
- ++search_count;
- break;
- case AF_UNSPEC:
- search[search_count].host = "0::0";
- search[search_count].family = AF_INET6;
- ++search_count;
- search[search_count].host = "0.0.0.0";
- search[search_count].family = AF_INET;
- ++search_count;
- break;
- default:
- break;
- }
- }
- else
- {
- // No host and not AI_PASSIVE means connect to local host.
- switch (hints->ai_family)
- {
- case AF_INET:
- search[search_count].host = "localhost";
- search[search_count].family = AF_INET;
- ++search_count;
- break;
- case AF_INET6:
- search[search_count].host = "localhost";
- search[search_count].family = AF_INET6;
- ++search_count;
- break;
- case AF_UNSPEC:
- search[search_count].host = "localhost";
- search[search_count].family = AF_INET6;
- ++search_count;
- search[search_count].host = "localhost";
- search[search_count].family = AF_INET;
- ++search_count;
- break;
- default:
- break;
- }
- }
- }
- else
- {
- // Host is specified.
- switch (hints->ai_family)
- {
- case AF_INET:
- search[search_count].host = host;
- search[search_count].family = AF_INET;
- ++search_count;
- break;
- case AF_INET6:
- search[search_count].host = host;
- search[search_count].family = AF_INET6;
- ++search_count;
- break;
- case AF_UNSPEC:
- search[search_count].host = host;
- search[search_count].family = AF_INET6;
- ++search_count;
- search[search_count].host = host;
- search[search_count].family = AF_INET;
- ++search_count;
- break;
- default:
- break;
- }
- }
- return search_count;
-}
-
-template <typename T>
-inline T* gai_alloc(std::size_t size = sizeof(T))
-{
- using namespace std;
- T* p = static_cast<T*>(::operator new(size, std::nothrow));
- if (p)
- memset(p, 0, size);
- return p;
-}
-
-inline void gai_free(void* p)
-{
- ::operator delete(p);
-}
-
-inline void gai_strcpy(char* target, const char* source, std::size_t max_size)
-{
- using namespace std;
-#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400) && !defined(UNDER_CE)
- strcpy_s(target, max_size, source);
-#else
- *target = 0;
- strncat(target, source, max_size);
-#endif
-}
-
-enum { gai_clone_flag = 1 << 30 };
-
-inline int gai_aistruct(addrinfo_type*** next, const addrinfo_type* hints,
- const void* addr, int family)
-{
- using namespace std;
-
- addrinfo_type* ai = gai_alloc<addrinfo_type>();
- if (ai == 0)
- return EAI_MEMORY;
-
- ai->ai_next = 0;
- **next = ai;
- *next = &ai->ai_next;
-
- ai->ai_canonname = 0;
- ai->ai_socktype = hints->ai_socktype;
- if (ai->ai_socktype == 0)
- ai->ai_flags |= gai_clone_flag;
- ai->ai_protocol = hints->ai_protocol;
- ai->ai_family = family;
-
- switch (ai->ai_family)
- {
- case AF_INET:
- {
- sockaddr_in4_type* sinptr = gai_alloc<sockaddr_in4_type>();
- if (sinptr == 0)
- return EAI_MEMORY;
- sinptr->sin_family = AF_INET;
- memcpy(&sinptr->sin_addr, addr, sizeof(in4_addr_type));
- ai->ai_addr = reinterpret_cast<sockaddr*>(sinptr);
- ai->ai_addrlen = sizeof(sockaddr_in4_type);
- break;
- }
- case AF_INET6:
- {
- sockaddr_in6_type* sin6ptr = gai_alloc<sockaddr_in6_type>();
- if (sin6ptr == 0)
- return EAI_MEMORY;
- sin6ptr->sin6_family = AF_INET6;
- memcpy(&sin6ptr->sin6_addr, addr, sizeof(in6_addr_type));
- ai->ai_addr = reinterpret_cast<sockaddr*>(sin6ptr);
- ai->ai_addrlen = sizeof(sockaddr_in6_type);
- break;
- }
- default:
- break;
- }
-
- return 0;
-}
-
-inline addrinfo_type* gai_clone(addrinfo_type* ai)
-{
- using namespace std;
-
- addrinfo_type* new_ai = gai_alloc<addrinfo_type>();
- if (new_ai == 0)
- return new_ai;
-
- new_ai->ai_next = ai->ai_next;
- ai->ai_next = new_ai;
-
- new_ai->ai_flags = 0;
- new_ai->ai_family = ai->ai_family;
- new_ai->ai_socktype = ai->ai_socktype;
- new_ai->ai_protocol = ai->ai_protocol;
- new_ai->ai_canonname = 0;
- new_ai->ai_addrlen = ai->ai_addrlen;
- new_ai->ai_addr = gai_alloc<sockaddr>(ai->ai_addrlen);
- memcpy(new_ai->ai_addr, ai->ai_addr, ai->ai_addrlen);
-
- return new_ai;
-}
-
-inline int gai_port(addrinfo_type* aihead, int port, int socktype)
-{
- int num_found = 0;
-
- for (addrinfo_type* ai = aihead; ai; ai = ai->ai_next)
- {
- if (ai->ai_flags & gai_clone_flag)
- {
- if (ai->ai_socktype != 0)
- {
- ai = gai_clone(ai);
- if (ai == 0)
- return -1;
- // ai now points to newly cloned entry.
- }
- }
- else if (ai->ai_socktype != socktype)
- {
- // Ignore if mismatch on socket type.
- continue;
- }
-
- ai->ai_socktype = socktype;
-
- switch (ai->ai_family)
- {
- case AF_INET:
- {
- sockaddr_in4_type* sinptr =
- reinterpret_cast<sockaddr_in4_type*>(ai->ai_addr);
- sinptr->sin_port = port;
- ++num_found;
- break;
- }
- case AF_INET6:
- {
- sockaddr_in6_type* sin6ptr =
- reinterpret_cast<sockaddr_in6_type*>(ai->ai_addr);
- sin6ptr->sin6_port = port;
- ++num_found;
- break;
- }
- default:
- break;
- }
- }
-
- return num_found;
-}
-
-inline int gai_serv(addrinfo_type* aihead,
- const addrinfo_type* hints, const char* serv)
-{
- using namespace std;
-
- int num_found = 0;
-
- if (
-#if defined(AI_NUMERICSERV)
- (hints->ai_flags & AI_NUMERICSERV) ||
-#endif
- isdigit(serv[0]))
- {
- int port = htons(atoi(serv));
- if (hints->ai_socktype)
- {
- // Caller specifies socket type.
- int rc = gai_port(aihead, port, hints->ai_socktype);
- if (rc < 0)
- return EAI_MEMORY;
- num_found += rc;
- }
- else
- {
- // Caller does not specify socket type.
- int rc = gai_port(aihead, port, SOCK_STREAM);
- if (rc < 0)
- return EAI_MEMORY;
- num_found += rc;
- rc = gai_port(aihead, port, SOCK_DGRAM);
- if (rc < 0)
- return EAI_MEMORY;
- num_found += rc;
- }
- }
- else
- {
- // Try service name with TCP first, then UDP.
- if (hints->ai_socktype == 0 || hints->ai_socktype == SOCK_STREAM)
- {
- servent* sptr = getservbyname(serv, "tcp");
- if (sptr != 0)
- {
- int rc = gai_port(aihead, sptr->s_port, SOCK_STREAM);
- if (rc < 0)
- return EAI_MEMORY;
- num_found += rc;
- }
- }
- if (hints->ai_socktype == 0 || hints->ai_socktype == SOCK_DGRAM)
- {
- servent* sptr = getservbyname(serv, "udp");
- if (sptr != 0)
- {
- int rc = gai_port(aihead, sptr->s_port, SOCK_DGRAM);
- if (rc < 0)
- return EAI_MEMORY;
- num_found += rc;
- }
- }
- }
-
- if (num_found == 0)
- {
- if (hints->ai_socktype == 0)
- {
- // All calls to getservbyname() failed.
- return EAI_NONAME;
- }
- else
- {
- // Service not supported for socket type.
- return EAI_SERVICE;
- }
- }
-
- return 0;
-}
-
-inline int gai_echeck(const char* host, const char* service,
- int flags, int family, int socktype, int protocol)
-{
- (void)(flags);
- (void)(protocol);
-
- // Host or service must be specified.
- if (host == 0 || host[0] == '\0')
- if (service == 0 || service[0] == '\0')
- return EAI_NONAME;
-
- // Check combination of family and socket type.
- switch (family)
- {
- case AF_UNSPEC:
- break;
- case AF_INET:
- case AF_INET6:
- if (socktype != 0 && socktype != SOCK_STREAM && socktype != SOCK_DGRAM)
- return EAI_SOCKTYPE;
- break;
- default:
- return EAI_FAMILY;
- }
-
- return 0;
-}
-
-inline void freeaddrinfo_emulation(addrinfo_type* aihead)
-{
- addrinfo_type* ai = aihead;
- while (ai)
- {
- gai_free(ai->ai_addr);
- gai_free(ai->ai_canonname);
- addrinfo_type* ainext = ai->ai_next;
- gai_free(ai);
- ai = ainext;
- }
-}
-
-inline int getaddrinfo_emulation(const char* host, const char* service,
- const addrinfo_type* hintsp, addrinfo_type** result)
-{
- // Set up linked list of addrinfo structures.
- addrinfo_type* aihead = 0;
- addrinfo_type** ainext = &aihead;
- char* canon = 0;
-
- // Supply default hints if not specified by caller.
- addrinfo_type hints = addrinfo_type();
- hints.ai_family = AF_UNSPEC;
- if (hintsp)
- hints = *hintsp;
-
- // If the resolution is not specifically for AF_INET6, remove the AI_V4MAPPED
- // and AI_ALL flags.
-#if defined(AI_V4MAPPED)
- if (hints.ai_family != AF_INET6)
- hints.ai_flags &= ~AI_V4MAPPED;
-#endif
-#if defined(AI_ALL)
- if (hints.ai_family != AF_INET6)
- hints.ai_flags &= ~AI_ALL;
-#endif
-
- // Basic error checking.
- int rc = gai_echeck(host, service, hints.ai_flags, hints.ai_family,
- hints.ai_socktype, hints.ai_protocol);
- if (rc != 0)
- {
- freeaddrinfo_emulation(aihead);
- return rc;
- }
-
- gai_search search[2];
- int search_count = gai_nsearch(host, &hints, search);
- for (gai_search* sptr = search; sptr < search + search_count; ++sptr)
- {
- // Check for IPv4 dotted decimal string.
- in4_addr_type inaddr;
- boost::system::error_code ec;
- if (socket_ops::inet_pton(AF_INET, sptr->host, &inaddr, 0, ec) == 1)
- {
- if (hints.ai_family != AF_UNSPEC && hints.ai_family != AF_INET)
- {
- freeaddrinfo_emulation(aihead);
- gai_free(canon);
- return EAI_FAMILY;
- }
- if (sptr->family == AF_INET)
- {
- rc = gai_aistruct(&ainext, &hints, &inaddr, AF_INET);
- if (rc != 0)
- {
- freeaddrinfo_emulation(aihead);
- gai_free(canon);
- return rc;
- }
- }
- continue;
- }
-
- // Check for IPv6 hex string.
- in6_addr_type in6addr;
- if (socket_ops::inet_pton(AF_INET6, sptr->host, &in6addr, 0, ec) == 1)
- {
- if (hints.ai_family != AF_UNSPEC && hints.ai_family != AF_INET6)
- {
- freeaddrinfo_emulation(aihead);
- gai_free(canon);
- return EAI_FAMILY;
- }
- if (sptr->family == AF_INET6)
- {
- rc = gai_aistruct(&ainext, &hints, &in6addr, AF_INET6);
- if (rc != 0)
- {
- freeaddrinfo_emulation(aihead);
- gai_free(canon);
- return rc;
- }
- }
- continue;
- }
-
- // Look up hostname.
- hostent hent;
- char hbuf[8192] = "";
- hostent* hptr = socket_ops::gethostbyname(sptr->host,
- sptr->family, &hent, hbuf, sizeof(hbuf), hints.ai_flags, ec);
- if (hptr == 0)
- {
- if (search_count == 2)
- {
- // Failure is OK if there are multiple searches.
- continue;
- }
- freeaddrinfo_emulation(aihead);
- gai_free(canon);
- if (ec == boost::asio::error::host_not_found)
- return EAI_NONAME;
- if (ec == boost::asio::error::host_not_found_try_again)
- return EAI_AGAIN;
- if (ec == boost::asio::error::no_recovery)
- return EAI_FAIL;
- if (ec == boost::asio::error::no_data)
- return EAI_NONAME;
- return EAI_NONAME;
- }
-
- // Check for address family mismatch if one was specified.
- if (hints.ai_family != AF_UNSPEC && hints.ai_family != hptr->h_addrtype)
- {
- freeaddrinfo_emulation(aihead);
- gai_free(canon);
- socket_ops::freehostent(hptr);
- return EAI_FAMILY;
- }
-
- // Save canonical name first time.
- if (host != 0 && host[0] != '\0' && hptr->h_name && hptr->h_name[0]
- && (hints.ai_flags & AI_CANONNAME) && canon == 0)
- {
- std::size_t canon_len = strlen(hptr->h_name) + 1;
- canon = gai_alloc<char>(canon_len);
- if (canon == 0)
- {
- freeaddrinfo_emulation(aihead);
- socket_ops::freehostent(hptr);
- return EAI_MEMORY;
- }
- gai_strcpy(canon, hptr->h_name, canon_len);
- }
-
- // Create an addrinfo structure for each returned address.
- for (char** ap = hptr->h_addr_list; *ap; ++ap)
- {
- rc = gai_aistruct(&ainext, &hints, *ap, hptr->h_addrtype);
- if (rc != 0)
- {
- freeaddrinfo_emulation(aihead);
- gai_free(canon);
- socket_ops::freehostent(hptr);
- return EAI_FAMILY;
- }
- }
-
- socket_ops::freehostent(hptr);
- }
-
- // Check if we found anything.
- if (aihead == 0)
- {
- gai_free(canon);
- return EAI_NONAME;
- }
-
- // Return canonical name in first entry.
- if (host != 0 && host[0] != '\0' && (hints.ai_flags & AI_CANONNAME))
- {
- if (canon)
- {
- aihead->ai_canonname = canon;
- canon = 0;
- }
- else
- {
- std::size_t canonname_len = strlen(search[0].host) + 1;
- aihead->ai_canonname = gai_alloc<char>(canonname_len);
- if (aihead->ai_canonname == 0)
- {
- freeaddrinfo_emulation(aihead);
- return EAI_MEMORY;
- }
- gai_strcpy(aihead->ai_canonname, search[0].host, canonname_len);
- }
- }
- gai_free(canon);
-
- // Process the service name.
- if (service != 0 && service[0] != '\0')
- {
- rc = gai_serv(aihead, &hints, service);
- if (rc != 0)
- {
- freeaddrinfo_emulation(aihead);
- return rc;
- }
- }
-
- // Return result to caller.
- *result = aihead;
- return 0;
-}
-
-inline boost::system::error_code getnameinfo_emulation(
- const socket_addr_type* sa, std::size_t salen, char* host,
- std::size_t hostlen, char* serv, std::size_t servlen, int flags,
- boost::system::error_code& ec)
-{
- using namespace std;
-
- const char* addr;
- size_t addr_len;
- unsigned short port;
- switch (sa->sa_family)
- {
- case AF_INET:
- if (salen != sizeof(sockaddr_in4_type))
- {
- return ec = boost::asio::error::invalid_argument;
- }
- addr = reinterpret_cast<const char*>(
- &reinterpret_cast<const sockaddr_in4_type*>(sa)->sin_addr);
- addr_len = sizeof(in4_addr_type);
- port = reinterpret_cast<const sockaddr_in4_type*>(sa)->sin_port;
- break;
- case AF_INET6:
- if (salen != sizeof(sockaddr_in6_type))
- {
- return ec = boost::asio::error::invalid_argument;
- }
- addr = reinterpret_cast<const char*>(
- &reinterpret_cast<const sockaddr_in6_type*>(sa)->sin6_addr);
- addr_len = sizeof(in6_addr_type);
- port = reinterpret_cast<const sockaddr_in6_type*>(sa)->sin6_port;
- break;
- default:
- return ec = boost::asio::error::address_family_not_supported;
- }
-
- if (host && hostlen > 0)
- {
- if (flags & NI_NUMERICHOST)
- {
- if (socket_ops::inet_ntop(sa->sa_family, addr, host, hostlen, 0, ec) == 0)
- {
- return ec;
- }
- }
- else
- {
- hostent hent;
- char hbuf[8192] = "";
- hostent* hptr = socket_ops::gethostbyaddr(addr,
- static_cast<int>(addr_len), sa->sa_family,
- &hent, hbuf, sizeof(hbuf), ec);
- if (hptr && hptr->h_name && hptr->h_name[0] != '\0')
- {
- if (flags & NI_NOFQDN)
- {
- char* dot = strchr(hptr->h_name, '.');
- if (dot)
- {
- *dot = 0;
- }
- }
- gai_strcpy(host, hptr->h_name, hostlen);
- socket_ops::freehostent(hptr);
- }
- else
- {
- socket_ops::freehostent(hptr);
- if (flags & NI_NAMEREQD)
- {
- return ec = boost::asio::error::host_not_found;
- }
- if (socket_ops::inet_ntop(sa->sa_family,
- addr, host, hostlen, 0, ec) == 0)
- {
- return ec;
- }
- }
- }
- }
-
- if (serv && servlen > 0)
- {
- if (flags & NI_NUMERICSERV)
- {
- if (servlen < 6)
- {
- return ec = boost::asio::error::no_buffer_space;
- }
-#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400) && !defined(UNDER_CE)
- sprintf_s(serv, servlen, "%u", ntohs(port));
-#else
- sprintf(serv, "%u", ntohs(port));
-#endif
- }
- else
- {
-#if defined(BOOST_HAS_THREADS) && defined(BOOST_HAS_PTHREADS)
- static ::pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
- ::pthread_mutex_lock(&mutex);
-#endif // defined(BOOST_HAS_THREADS) && defined(BOOST_HAS_PTHREADS)
- servent* sptr = ::getservbyport(port, (flags & NI_DGRAM) ? "udp" : 0);
- if (sptr && sptr->s_name && sptr->s_name[0] != '\0')
- {
- gai_strcpy(serv, sptr->s_name, servlen);
- }
- else
- {
- if (servlen < 6)
- {
- return ec = boost::asio::error::no_buffer_space;
- }
-#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400) && !defined(UNDER_CE)
- sprintf_s(serv, servlen, "%u", ntohs(port));
-#else
- sprintf(serv, "%u", ntohs(port));
-#endif
- }
-#if defined(BOOST_HAS_THREADS) && defined(BOOST_HAS_PTHREADS)
- ::pthread_mutex_unlock(&mutex);
-#endif // defined(BOOST_HAS_THREADS) && defined(BOOST_HAS_PTHREADS)
- }
- }
-
- clear_error(ec);
- return ec;
-}
-
-#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- // || defined(__MACH__) && defined(__APPLE__)
-
-inline boost::system::error_code translate_addrinfo_error(int error)
-{
- switch (error)
- {
- case 0:
- return boost::system::error_code();
- case EAI_AGAIN:
- return boost::asio::error::host_not_found_try_again;
- case EAI_BADFLAGS:
- return boost::asio::error::invalid_argument;
- case EAI_FAIL:
- return boost::asio::error::no_recovery;
- case EAI_FAMILY:
- return boost::asio::error::address_family_not_supported;
- case EAI_MEMORY:
- return boost::asio::error::no_memory;
- case EAI_NONAME:
-#if defined(EAI_ADDRFAMILY)
- case EAI_ADDRFAMILY:
-#endif
-#if defined(EAI_NODATA) && (EAI_NODATA != EAI_NONAME)
- case EAI_NODATA:
-#endif
- return boost::asio::error::host_not_found;
- case EAI_SERVICE:
- return boost::asio::error::service_not_found;
- case EAI_SOCKTYPE:
- return boost::asio::error::socket_type_not_supported;
- default: // Possibly the non-portable EAI_SYSTEM.
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
- return boost::system::error_code(
- WSAGetLastError(), boost::asio::error::get_system_category());
-#else
- return boost::system::error_code(
- errno, boost::asio::error::get_system_category());
-#endif
- }
-}
-
-inline boost::system::error_code getaddrinfo(const char* host,
- const char* service, const addrinfo_type* hints, addrinfo_type** result,
- boost::system::error_code& ec)
-{
- clear_error(ec);
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-# if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0501) || defined(UNDER_CE)
- // Building for Windows XP, Windows Server 2003, or later.
- int error = ::getaddrinfo(host, service, hints, result);
- return ec = translate_addrinfo_error(error);
-# else
- // Building for Windows 2000 or earlier.
- typedef int (WSAAPI *gai_t)(const char*,
- const char*, const addrinfo_type*, addrinfo_type**);
- if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
- {
- if (gai_t gai = (gai_t)::GetProcAddress(winsock_module, "getaddrinfo"))
- {
- int error = gai(host, service, hints, result);
- return ec = translate_addrinfo_error(error);
- }
- }
- int error = getaddrinfo_emulation(host, service, hints, result);
- return ec = translate_addrinfo_error(error);
-# endif
-#elif defined(__MACH__) && defined(__APPLE__)
- int error = getaddrinfo_emulation(host, service, hints, result);
- return ec = translate_addrinfo_error(error);
-#else
- int error = ::getaddrinfo(host, service, hints, result);
- return ec = translate_addrinfo_error(error);
-#endif
-}
-
-inline void freeaddrinfo(addrinfo_type* ai)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-# if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0501) || defined(UNDER_CE)
- // Building for Windows XP, Windows Server 2003, or later.
- ::freeaddrinfo(ai);
-# else
- // Building for Windows 2000 or earlier.
- typedef int (WSAAPI *fai_t)(addrinfo_type*);
- if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
- {
- if (fai_t fai = (fai_t)::GetProcAddress(winsock_module, "freeaddrinfo"))
- {
- fai(ai);
- return;
- }
- }
- freeaddrinfo_emulation(ai);
-# endif
-#elif defined(__MACH__) && defined(__APPLE__)
- freeaddrinfo_emulation(ai);
-#else
- ::freeaddrinfo(ai);
-#endif
-}
-
-inline boost::system::error_code getnameinfo(const socket_addr_type* addr,
- std::size_t addrlen, char* host, std::size_t hostlen,
- char* serv, std::size_t servlen, int flags, boost::system::error_code& ec)
-{
-#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
-# if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0501) || defined(UNDER_CE)
- // Building for Windows XP, Windows Server 2003, or later.
- clear_error(ec);
- int error = ::getnameinfo(addr, static_cast<socklen_t>(addrlen),
- host, static_cast<DWORD>(hostlen),
- serv, static_cast<DWORD>(servlen), flags);
- return ec = translate_addrinfo_error(error);
-# else
- // Building for Windows 2000 or earlier.
- typedef int (WSAAPI *gni_t)(const socket_addr_type*,
- int, char*, DWORD, char*, DWORD, int);
- if (HMODULE winsock_module = ::GetModuleHandleA("ws2_32"))
- {
- if (gni_t gni = (gni_t)::GetProcAddress(winsock_module, "getnameinfo"))
- {
- clear_error(ec);
- int error = gni(addr, static_cast<int>(addrlen),
- host, static_cast<DWORD>(hostlen),
- serv, static_cast<DWORD>(servlen), flags);
- return ec = translate_addrinfo_error(error);
- }
- }
- clear_error(ec);
- return getnameinfo_emulation(addr, addrlen,
- host, hostlen, serv, servlen, flags, ec);
-# endif
-#elif defined(__MACH__) && defined(__APPLE__)
- using namespace std; // For memcpy.
- sockaddr_storage_type tmp_addr;
- memcpy(&tmp_addr, addr, addrlen);
- tmp_addr.ss_len = addrlen;
- addr = reinterpret_cast<socket_addr_type*>(&tmp_addr);
- clear_error(ec);
- return getnameinfo_emulation(addr, addrlen,
- host, hostlen, serv, servlen, flags, ec);
-#else
- clear_error(ec);
- int error = ::getnameinfo(addr, addrlen, host, hostlen, serv, servlen, flags);
- return ec = translate_addrinfo_error(error);
-#endif
-}
-
-inline u_long_type network_to_host_long(u_long_type value)
-{
- return ntohl(value);
-}
-
-inline u_long_type host_to_network_long(u_long_type value)
-{
- return htonl(value);
-}
-
-inline u_short_type network_to_host_short(u_short_type value)
-{
- return ntohs(value);
-}
-
-inline u_short_type host_to_network_short(u_short_type value)
-{
- return htons(value);
-}
-
-} // namespace socket_ops
-} // namespace detail
-} // namespace asio
-} // namespace boost
-
-#include <boost/asio/detail/pop_options.hpp>
-
-#endif // BOOST_ASIO_DETAIL_SOCKET_OPS_HPP