74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
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// Copyright 2014 Mikio Hara. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package tcp
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import (
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"errors"
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"os"
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"sync"
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"syscall"
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"time"
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"unsafe"
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"github.com/mikioh/tcpopt"
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)
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var options [soMax]option
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func ioctl(s uintptr, ioc int, b []byte) error {
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return errors.New("not implemented")
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}
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var keepAlive = struct {
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sync.RWMutex
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syscall.TCPKeepalive
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}{
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TCPKeepalive: syscall.TCPKeepalive{
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OnOff: 1,
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Time: uint32(2 * time.Hour / time.Millisecond),
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Interval: uint32(time.Second / time.Millisecond),
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},
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}
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func setsockopt(s uintptr, level, name int, b []byte) error {
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var kai tcpopt.KeepAliveIdleInterval
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var kap tcpopt.KeepAliveProbeInterval
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if level == kai.Level() && name == kai.Name() {
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keepAlive.Lock()
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defer keepAlive.Unlock()
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prev := keepAlive.Time
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keepAlive.Time = nativeEndian.Uint32(b)
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rv := uint32(0)
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siz := uint32(unsafe.Sizeof(keepAlive))
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if err := syscall.WSAIoctl(syscall.Handle(s), syscall.SIO_KEEPALIVE_VALS, (*byte)(unsafe.Pointer(&keepAlive)), siz, nil, 0, &rv, nil, 0); err != nil {
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keepAlive.Time = prev
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return os.NewSyscallError("wsaioctl", err)
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}
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return nil
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}
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if level == kap.Level() && name == kap.Name() {
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keepAlive.Lock()
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defer keepAlive.Unlock()
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prev := keepAlive.Interval
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keepAlive.Interval = nativeEndian.Uint32(b)
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rv := uint32(0)
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siz := uint32(unsafe.Sizeof(keepAlive))
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if err := syscall.WSAIoctl(syscall.Handle(s), syscall.SIO_KEEPALIVE_VALS, (*byte)(unsafe.Pointer(&keepAlive)), siz, nil, 0, &rv, nil, 0); err != nil {
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keepAlive.Interval = prev
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return os.NewSyscallError("wsaioctl", err)
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}
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return nil
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}
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if len(b) == 4 {
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v := int(nativeEndian.Uint32(b))
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return syscall.SetsockoptInt(syscall.Handle(s), level, name, v)
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}
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return errors.New("not implemented")
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}
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func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
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return 0, errors.New("not implemented")
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}
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