// 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 h := sd.testHookDialTCP; h != nil { return h(ctx, sd.network, laddr, raddr) } if h := testHookDialTCP; h != nil { return h(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, sd.Dialer.KeepAlive, testHookSetKeepAlive), 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 } return newTCPConn(fd, ln.lc.KeepAlive, nil), 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 }