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Source file src/net/internal/socktest/sys_windows.go

Documentation: net/internal/socktest

  // Copyright 2015 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  package socktest
  
  import "syscall"
  
  // Socket wraps syscall.Socket.
  func (sw *Switch) Socket(family, sotype, proto int) (s syscall.Handle, err error) {
  	sw.once.Do(sw.init)
  
  	so := &Status{Cookie: cookie(family, sotype, proto)}
  	sw.fmu.RLock()
  	f, _ := sw.fltab[FilterSocket]
  	sw.fmu.RUnlock()
  
  	af, err := f.apply(so)
  	if err != nil {
  		return syscall.InvalidHandle, err
  	}
  	s, so.Err = syscall.Socket(family, sotype, proto)
  	if err = af.apply(so); err != nil {
  		if so.Err == nil {
  			syscall.Closesocket(s)
  		}
  		return syscall.InvalidHandle, err
  	}
  
  	sw.smu.Lock()
  	defer sw.smu.Unlock()
  	if so.Err != nil {
  		sw.stats.getLocked(so.Cookie).OpenFailed++
  		return syscall.InvalidHandle, so.Err
  	}
  	nso := sw.addLocked(s, family, sotype, proto)
  	sw.stats.getLocked(nso.Cookie).Opened++
  	return s, nil
  }
  
  // Closesocket wraps syscall.Closesocket.
  func (sw *Switch) Closesocket(s syscall.Handle) (err error) {
  	so := sw.sockso(s)
  	if so == nil {
  		return syscall.Closesocket(s)
  	}
  	sw.fmu.RLock()
  	f, _ := sw.fltab[FilterClose]
  	sw.fmu.RUnlock()
  
  	af, err := f.apply(so)
  	if err != nil {
  		return err
  	}
  	so.Err = syscall.Closesocket(s)
  	if err = af.apply(so); err != nil {
  		return err
  	}
  
  	sw.smu.Lock()
  	defer sw.smu.Unlock()
  	if so.Err != nil {
  		sw.stats.getLocked(so.Cookie).CloseFailed++
  		return so.Err
  	}
  	delete(sw.sotab, s)
  	sw.stats.getLocked(so.Cookie).Closed++
  	return nil
  }
  
  // Connect wraps syscall.Connect.
  func (sw *Switch) Connect(s syscall.Handle, sa syscall.Sockaddr) (err error) {
  	so := sw.sockso(s)
  	if so == nil {
  		return syscall.Connect(s, sa)
  	}
  	sw.fmu.RLock()
  	f, _ := sw.fltab[FilterConnect]
  	sw.fmu.RUnlock()
  
  	af, err := f.apply(so)
  	if err != nil {
  		return err
  	}
  	so.Err = syscall.Connect(s, sa)
  	if err = af.apply(so); err != nil {
  		return err
  	}
  
  	sw.smu.Lock()
  	defer sw.smu.Unlock()
  	if so.Err != nil {
  		sw.stats.getLocked(so.Cookie).ConnectFailed++
  		return so.Err
  	}
  	sw.stats.getLocked(so.Cookie).Connected++
  	return nil
  }
  
  // ConnectEx wraps syscall.ConnectEx.
  func (sw *Switch) ConnectEx(s syscall.Handle, sa syscall.Sockaddr, b *byte, n uint32, nwr *uint32, o *syscall.Overlapped) (err error) {
  	so := sw.sockso(s)
  	if so == nil {
  		return syscall.ConnectEx(s, sa, b, n, nwr, o)
  	}
  	sw.fmu.RLock()
  	f, _ := sw.fltab[FilterConnect]
  	sw.fmu.RUnlock()
  
  	af, err := f.apply(so)
  	if err != nil {
  		return err
  	}
  	so.Err = syscall.ConnectEx(s, sa, b, n, nwr, o)
  	if err = af.apply(so); err != nil {
  		return err
  	}
  
  	sw.smu.Lock()
  	defer sw.smu.Unlock()
  	if so.Err != nil {
  		sw.stats.getLocked(so.Cookie).ConnectFailed++
  		return so.Err
  	}
  	sw.stats.getLocked(so.Cookie).Connected++
  	return nil
  }
  
  // Listen wraps syscall.Listen.
  func (sw *Switch) Listen(s syscall.Handle, backlog int) (err error) {
  	so := sw.sockso(s)
  	if so == nil {
  		return syscall.Listen(s, backlog)
  	}
  	sw.fmu.RLock()
  	f, _ := sw.fltab[FilterListen]
  	sw.fmu.RUnlock()
  
  	af, err := f.apply(so)
  	if err != nil {
  		return err
  	}
  	so.Err = syscall.Listen(s, backlog)
  	if err = af.apply(so); err != nil {
  		return err
  	}
  
  	sw.smu.Lock()
  	defer sw.smu.Unlock()
  	if so.Err != nil {
  		sw.stats.getLocked(so.Cookie).ListenFailed++
  		return so.Err
  	}
  	sw.stats.getLocked(so.Cookie).Listened++
  	return nil
  }
  
  // AcceptEx wraps syscall.AcceptEx.
  func (sw *Switch) AcceptEx(ls syscall.Handle, as syscall.Handle, b *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, rcvd *uint32, overlapped *syscall.Overlapped) error {
  	so := sw.sockso(ls)
  	if so == nil {
  		return syscall.AcceptEx(ls, as, b, rxdatalen, laddrlen, raddrlen, rcvd, overlapped)
  	}
  	sw.fmu.RLock()
  	f, _ := sw.fltab[FilterAccept]
  	sw.fmu.RUnlock()
  
  	af, err := f.apply(so)
  	if err != nil {
  		return err
  	}
  	so.Err = syscall.AcceptEx(ls, as, b, rxdatalen, laddrlen, raddrlen, rcvd, overlapped)
  	if err = af.apply(so); err != nil {
  		return err
  	}
  
  	sw.smu.Lock()
  	defer sw.smu.Unlock()
  	if so.Err != nil {
  		sw.stats.getLocked(so.Cookie).AcceptFailed++
  		return so.Err
  	}
  	nso := sw.addLocked(as, so.Cookie.Family(), so.Cookie.Type(), so.Cookie.Protocol())
  	sw.stats.getLocked(nso.Cookie).Accepted++
  	return nil
  }
  

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