1 files changed, 198 insertions, 0 deletions
diff --git a/src/net/tcpsock_plan9.go b/src/net/tcpsock_plan9.go
new file mode 100644
index 000000000..52019d7b4
--- /dev/null
+++ b/src/net/tcpsock_plan9.go
@@ -0,0 +1,198 @@
+// 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 (
+	"io"
+	"os"
+	"syscall"
+	"time"
+)
+
+// TCPConn is an implementation of the Conn interface for TCP network
+// connections.
+type TCPConn struct {
+	conn
+}
+
+func newTCPConn(fd *netFD) *TCPConn {
+	return &TCPConn{conn{fd}}
+}
+
+// ReadFrom implements the io.ReaderFrom ReadFrom method.
+func (c *TCPConn) ReadFrom(r io.Reader) (int64, error) {
+	return genericReadFrom(c, r)
+}
+
+// CloseRead shuts down the reading side of the TCP connection.
+// Most callers should just use Close.
+func (c *TCPConn) CloseRead() error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	return c.fd.closeRead()
+}
+
+// CloseWrite shuts down the writing side of the TCP connection.
+// Most callers should just use Close.
+func (c *TCPConn) CloseWrite() error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	return c.fd.closeWrite()
+}
+
+// SetLinger sets the behavior of Close on a connection which still
+// has data waiting to be sent or to be acknowledged.
+//
+// If sec < 0 (the default), the operating system finishes sending the
+// data in the background.
+//
+// If sec == 0, the operating system discards any unsent or
+// unacknowledged data.
+//
+// If sec > 0, the data is sent in the background as with sec < 0. On
+// some operating systems after sec seconds have elapsed any remaining
+// unsent data may be discarded.
+func (c *TCPConn) SetLinger(sec int) error {
+	return syscall.EPLAN9
+}
+
+// SetKeepAlive sets whether the operating system should send
+// keepalive messages on the connection.
+func (c *TCPConn) SetKeepAlive(keepalive bool) error {
+	if !c.ok() {
+		return syscall.EPLAN9
+	}
+	return setKeepAlive(c.fd, keepalive)
+}
+
+// SetKeepAlivePeriod sets period between keep alives.
+func (c *TCPConn) SetKeepAlivePeriod(d time.Duration) error {
+	if !c.ok() {
+		return syscall.EPLAN9
+	}
+	return setKeepAlivePeriod(c.fd, d)
+}
+
+// SetNoDelay controls whether the operating system should delay
+// packet transmission in hopes of sending fewer packets (Nagle's
+// algorithm).  The default is true (no delay), meaning that data is
+// sent as soon as possible after a Write.
+func (c *TCPConn) SetNoDelay(noDelay bool) error {
+	return syscall.EPLAN9
+}
+
+// DialTCP connects to the remote address raddr on the network net,
+// which must be "tcp", "tcp4", or "tcp6".  If laddr is not nil, it is
+// used as the local address for the connection.
+func DialTCP(net string, laddr, raddr *TCPAddr) (*TCPConn, error) {
+	return dialTCP(net, laddr, raddr, noDeadline)
+}
+
+func dialTCP(net string, laddr, raddr *TCPAddr, deadline time.Time) (*TCPConn, error) {
+	if !deadline.IsZero() {
+		panic("net.dialTCP: deadline not implemented on Plan 9")
+	}
+	switch net {
+	case "tcp", "tcp4", "tcp6":
+	default:
+		return nil, &OpError{"dial", net, raddr, UnknownNetworkError(net)}
+	}
+	if raddr == nil {
+		return nil, &OpError{"dial", net, nil, errMissingAddress}
+	}
+	fd, err := dialPlan9(net, laddr, raddr)
+	if err != nil {
+		return nil, err
+	}
+	return newTCPConn(fd), nil
+}
+
+// TCPListener is a TCP network listener.  Clients should typically
+// use variables of type Listener instead of assuming TCP.
+type TCPListener struct {
+	fd *netFD
+}
+
+// AcceptTCP accepts the next incoming call and returns the new
+// connection.
+func (l *TCPListener) AcceptTCP() (*TCPConn, error) {
+	if l == nil || l.fd == nil || l.fd.ctl == nil {
+		return nil, syscall.EINVAL
+	}
+	fd, err := l.fd.acceptPlan9()
+	if err != nil {
+		return nil, err
+	}
+	return newTCPConn(fd), nil
+}
+
+// Accept implements the Accept method in the Listener interface; it
+// waits for the next call and returns a generic Conn.
+func (l *TCPListener) Accept() (Conn, error) {
+	if l == nil || l.fd == nil || l.fd.ctl == nil {
+		return nil, syscall.EINVAL
+	}
+	c, err := l.AcceptTCP()
+	if err != nil {
+		return nil, err
+	}
+	return c, nil
+}
+
+// Close stops listening on the TCP address.
+// Already Accepted connections are not closed.
+func (l *TCPListener) Close() error {
+	if l == nil || l.fd == nil || l.fd.ctl == nil {
+		return syscall.EINVAL
+	}
+	if _, err := l.fd.ctl.WriteString("hangup"); err != nil {
+		l.fd.ctl.Close()
+		return &OpError{"close", l.fd.ctl.Name(), l.fd.laddr, err}
+	}
+	return l.fd.ctl.Close()
+}
+
+// Addr returns the listener's network address, a *TCPAddr.
+func (l *TCPListener) Addr() Addr { return l.fd.laddr }
+
+// SetDeadline sets the deadline associated with the listener.
+// A zero time value disables the deadline.
+func (l *TCPListener) SetDeadline(t time.Time) error {
+	if l == nil || l.fd == nil || l.fd.ctl == nil {
+		return syscall.EINVAL
+	}
+	return l.fd.setDeadline(t)
+}
+
+// File returns a copy of the underlying os.File, set to blocking
+// mode.  It is the caller's responsibility to close f when finished.
+// Closing l does not affect f, and closing f does not affect l.
+//
+// The returned os.File's file descriptor is different from the
+// connection's.  Attempting to change properties of the original
+// using this duplicate may or may not have the desired effect.
+func (l *TCPListener) File() (f *os.File, err error) { return l.dup() }
+
+// ListenTCP announces on the TCP address laddr and returns a TCP
+// listener.  Net must be "tcp", "tcp4", or "tcp6".  If laddr has a
+// port of 0, ListenTCP will choose an available port.  The caller can
+// use the Addr method of TCPListener to retrieve the chosen address.
+func ListenTCP(net string, laddr *TCPAddr) (*TCPListener, error) {
+	switch net {
+	case "tcp", "tcp4", "tcp6":
+	default:
+		return nil, &OpError{"listen", net, laddr, UnknownNetworkError(net)}
+	}
+	if laddr == nil {
+		laddr = &TCPAddr{}
+	}
+	fd, err := listenPlan9(net, laddr)
+	if err != nil {
+		return nil, err
+	}
+	return &TCPListener{fd}, nil
+}