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// Copyright 2009 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 net
import (
"context"
"io"
"os"
)
func (c *TCPConn) readFrom(r io.Reader) (int64, error) {
return genericReadFrom(c, r)
}
func (sd *sysDialer) dialTCP(ctx context.Context, laddr, raddr *TCPAddr) (*TCPConn, error) {
if testHookDialTCP != nil {
return testHookDialTCP(ctx, sd.network, laddr, raddr)
}
return sd.doDialTCP(ctx, laddr, raddr)
}
func (sd *sysDialer) doDialTCP(ctx context.Context, laddr, raddr *TCPAddr) (*TCPConn, error) {
switch sd.network {
case "tcp4":
// Plan 9 doesn't complain about [::]:0->127.0.0.1, so it's up to us.
if laddr != nil && len(laddr.IP) != 0 && laddr.IP.To4() == nil {
return nil, &AddrError{Err: "non-IPv4 local address", Addr: laddr.String()}
}
case "tcp", "tcp6":
default:
return nil, UnknownNetworkError(sd.network)
}
if raddr == nil {
return nil, errMissingAddress
}
fd, err := dialPlan9(ctx, sd.network, laddr, raddr)
if err != nil {
return nil, err
}
return newTCPConn(fd), nil
}
func (ln *TCPListener) ok() bool { return ln != nil && ln.fd != nil && ln.fd.ctl != nil }
func (ln *TCPListener) accept() (*TCPConn, error) {
fd, err := ln.fd.acceptPlan9()
if err != nil {
return nil, err
}
tc := newTCPConn(fd)
if ln.lc.KeepAlive >= 0 {
setKeepAlive(fd, true)
ka := ln.lc.KeepAlive
if ln.lc.KeepAlive == 0 {
ka = defaultTCPKeepAlive
}
setKeepAlivePeriod(fd, ka)
}
return tc, nil
}
func (ln *TCPListener) close() error {
if err := ln.fd.pfd.Close(); err != nil {
return err
}
if _, err := ln.fd.ctl.WriteString("hangup"); err != nil {
ln.fd.ctl.Close()
return err
}
if err := ln.fd.ctl.Close(); err != nil {
return err
}
return nil
}
func (ln *TCPListener) file() (*os.File, error) {
f, err := ln.dup()
if err != nil {
return nil, err
}
return f, nil
}
func (sl *sysListener) listenTCP(ctx context.Context, laddr *TCPAddr) (*TCPListener, error) {
fd, err := listenPlan9(ctx, sl.network, laddr)
if err != nil {
return nil, err
}
return &TCPListener{fd: fd, lc: sl.ListenConfig}, nil
}
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