mirror of
https://github.com/klzgrad/naiveproxy.git
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85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
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// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "net/socket/socket_options.h"
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#include <cerrno>
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#include "build/build_config.h"
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#include "net/base/net_errors.h"
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#if defined(OS_POSIX)
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <sys/socket.h>
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#elif defined(OS_WIN)
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#include <winsock2.h>
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#endif
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namespace net {
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int SetTCPNoDelay(SocketDescriptor fd, bool no_delay) {
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#if defined(OS_POSIX)
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int on = no_delay ? 1 : 0;
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#elif defined(OS_WIN)
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BOOL on = no_delay ? TRUE : FALSE;
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#endif
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int rv = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY,
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reinterpret_cast<const char*>(&on), sizeof(on));
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return rv == -1 ? MapSystemError(errno) : OK;
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}
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int SetReuseAddr(SocketDescriptor fd, bool reuse) {
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// SO_REUSEADDR is useful for server sockets to bind to a recently unbound
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// port. When a socket is closed, the end point changes its state to TIME_WAIT
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// and wait for 2 MSL (maximum segment lifetime) to ensure the remote peer
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// acknowledges its closure. For server sockets, it is usually safe to
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// bind to a TIME_WAIT end point immediately, which is a widely adopted
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// behavior.
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//
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// Note that on *nix, SO_REUSEADDR does not enable the socket (which can be
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// either TCP or UDP) to bind to an end point that is already bound by another
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// socket. To do that one must set SO_REUSEPORT instead. This option is not
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// provided on Linux prior to 3.9.
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//
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// SO_REUSEPORT is provided in MacOS X and iOS.
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#if defined(OS_POSIX)
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int boolean_value = reuse ? 1 : 0;
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#elif defined(OS_WIN)
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BOOL boolean_value = reuse ? TRUE : FALSE;
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#endif
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int rv = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
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reinterpret_cast<const char*>(&boolean_value),
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sizeof(boolean_value));
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return rv == -1 ? MapSystemError(errno) : OK;
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}
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int SetSocketReceiveBufferSize(SocketDescriptor fd, int32_t size) {
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int rv = setsockopt(fd, SOL_SOCKET, SO_RCVBUF,
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reinterpret_cast<const char*>(&size), sizeof(size));
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#if defined(OS_POSIX)
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int os_error = errno;
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#elif defined(OS_WIN)
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int os_error = WSAGetLastError();
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#endif
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int net_error = (rv == -1) ? MapSystemError(os_error) : OK;
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DCHECK(!rv) << "Could not set socket receive buffer size: " << net_error;
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return net_error;
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}
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int SetSocketSendBufferSize(SocketDescriptor fd, int32_t size) {
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int rv = setsockopt(fd, SOL_SOCKET, SO_SNDBUF,
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reinterpret_cast<const char*>(&size), sizeof(size));
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#if defined(OS_POSIX)
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int os_error = errno;
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#elif defined(OS_WIN)
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int os_error = WSAGetLastError();
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#endif
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int net_error = (rv == -1) ? MapSystemError(os_error) : OK;
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DCHECK(!rv) << "Could not set socket receive buffer size: " << net_error;
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return net_error;
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}
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} // namespace net
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