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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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