1 files changed, 192 insertions, 0 deletions
diff --git a/libgo/go/net/net.go b/libgo/go/net/net.go
new file mode 100644
index 000000000..c0c1c3b8a
--- /dev/null
+++ b/libgo/go/net/net.go
@@ -0,0 +1,192 @@
+// 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.
+
+// The net package provides a portable interface to Unix
+// networks sockets, including TCP/IP, UDP, domain name
+// resolution, and Unix domain sockets.
+package net
+
+// TODO(rsc):
+//	support for raw ethernet sockets
+
+import "os"
+
+// Addr represents a network end point address.
+type Addr interface {
+	Network() string // name of the network
+	String() string  // string form of address
+}
+
+// Conn is a generic stream-oriented network connection.
+type Conn interface {
+	// Read reads data from the connection.
+	// Read can be made to time out and return a net.Error with Timeout() == true
+	// after a fixed time limit; see SetTimeout and SetReadTimeout.
+	Read(b []byte) (n int, err os.Error)
+
+	// Write writes data to the connection.
+	// Write can be made to time out and return a net.Error with Timeout() == true
+	// after a fixed time limit; see SetTimeout and SetWriteTimeout.
+	Write(b []byte) (n int, err os.Error)
+
+	// Close closes the connection.
+	// The error returned is an os.Error to satisfy io.Closer;
+	Close() os.Error
+
+	// LocalAddr returns the local network address.
+	LocalAddr() Addr
+
+	// RemoteAddr returns the remote network address.
+	RemoteAddr() Addr
+
+	// SetTimeout sets the read and write deadlines associated
+	// with the connection.
+	SetTimeout(nsec int64) os.Error
+
+	// SetReadTimeout sets the time (in nanoseconds) that
+	// Read will wait for data before returning an error with Timeout() == true.
+	// Setting nsec == 0 (the default) disables the deadline.
+	SetReadTimeout(nsec int64) os.Error
+
+	// SetWriteTimeout sets the time (in nanoseconds) that
+	// Write will wait to send its data before returning an error with Timeout() == true.
+	// Setting nsec == 0 (the default) disables the deadline.
+	// Even if write times out, it may return n > 0, indicating that
+	// some of the data was successfully written.
+	SetWriteTimeout(nsec int64) os.Error
+}
+
+// An Error represents a network error.
+type Error interface {
+	os.Error
+	Timeout() bool   // Is the error a timeout?
+	Temporary() bool // Is the error temporary?
+}
+
+// PacketConn is a generic packet-oriented network connection.
+type PacketConn interface {
+	// ReadFrom reads a packet from the connection,
+	// copying the payload into b.  It returns the number of
+	// bytes copied into b and the return address that
+	// was on the packet.
+	// ReadFrom can be made to time out and return
+	// an error with Timeout() == true after a fixed time limit;
+	// see SetTimeout and SetReadTimeout.
+	ReadFrom(b []byte) (n int, addr Addr, err os.Error)
+
+	// WriteTo writes a packet with payload b to addr.
+	// WriteTo can be made to time out and return
+	// an error with Timeout() == true after a fixed time limit;
+	// see SetTimeout and SetWriteTimeout.
+	// On packet-oriented connections, write timeouts are rare.
+	WriteTo(b []byte, addr Addr) (n int, err os.Error)
+
+	// Close closes the connection.
+	// The error returned is an os.Error to satisfy io.Closer;
+	Close() os.Error
+
+	// LocalAddr returns the local network address.
+	LocalAddr() Addr
+
+	// SetTimeout sets the read and write deadlines associated
+	// with the connection.
+	SetTimeout(nsec int64) os.Error
+
+	// SetReadTimeout sets the time (in nanoseconds) that
+	// Read will wait for data before returning an error with Timeout() == true.
+	// Setting nsec == 0 (the default) disables the deadline.
+	SetReadTimeout(nsec int64) os.Error
+
+	// SetWriteTimeout sets the time (in nanoseconds) that
+	// Write will wait to send its data before returning an error with Timeout() == true.
+	// Setting nsec == 0 (the default) disables the deadline.
+	// Even if write times out, it may return n > 0, indicating that
+	// some of the data was successfully written.
+	SetWriteTimeout(nsec int64) os.Error
+}
+
+// A Listener is a generic network listener for stream-oriented protocols.
+type Listener interface {
+	// Accept waits for and returns the next connection to the listener.
+	Accept() (c Conn, err os.Error)
+
+	// Close closes the listener.
+	// The error returned is an os.Error to satisfy io.Closer;
+	Close() os.Error
+
+	// Addr returns the listener's network address.
+	Addr() Addr
+}
+
+var errMissingAddress = os.ErrorString("missing address")
+
+type OpError struct {
+	Op    string
+	Net   string
+	Addr  Addr
+	Error os.Error
+}
+
+func (e *OpError) String() string {
+	if e == nil {
+		return "<nil>"
+	}
+	s := e.Op
+	if e.Net != "" {
+		s += " " + e.Net
+	}
+	if e.Addr != nil {
+		s += " " + e.Addr.String()
+	}
+	s += ": " + e.Error.String()
+	return s
+}
+
+type temporary interface {
+	Temporary() bool
+}
+
+func (e *OpError) Temporary() bool {
+	t, ok := e.Error.(temporary)
+	return ok && t.Temporary()
+}
+
+type timeout interface {
+	Timeout() bool
+}
+
+func (e *OpError) Timeout() bool {
+	t, ok := e.Error.(timeout)
+	return ok && t.Timeout()
+}
+
+type AddrError struct {
+	Error string
+	Addr  string
+}
+
+func (e *AddrError) String() string {
+	if e == nil {
+		return "<nil>"
+	}
+	s := e.Error
+	if e.Addr != "" {
+		s += " " + e.Addr
+	}
+	return s
+}
+
+func (e *AddrError) Temporary() bool {
+	return false
+}
+
+func (e *AddrError) Timeout() bool {
+	return false
+}
+
+type UnknownNetworkError string
+
+func (e UnknownNetworkError) String() string  { return "unknown network " + string(e) }
+func (e UnknownNetworkError) Temporary() bool { return false }
+func (e UnknownNetworkError) Timeout() bool   { return false }