net: consolidate common socket functions for Plan 9
This CL extends changeset 13126:fc4a62e14aba to Plan 9.
R=ality, golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6820124
diff --git a/src/pkg/net/net.go b/src/pkg/net/net.go
index 4f0edd4..feb92a2 100644
--- a/src/pkg/net/net.go
+++ b/src/pkg/net/net.go
@@ -44,6 +44,8 @@
import (
"errors"
+ "os"
+ "syscall"
"time"
)
@@ -103,6 +105,101 @@
SetWriteDeadline(t time.Time) error
}
+type conn struct {
+ fd *netFD
+}
+
+func (c *conn) ok() bool { return c != nil && c.fd != nil }
+
+// Implementation of the Conn interface.
+
+// Read implements the Conn Read method.
+func (c *conn) Read(b []byte) (int, error) {
+ if !c.ok() {
+ return 0, syscall.EINVAL
+ }
+ return c.fd.Read(b)
+}
+
+// Write implements the Conn Write method.
+func (c *conn) Write(b []byte) (int, error) {
+ if !c.ok() {
+ return 0, syscall.EINVAL
+ }
+ return c.fd.Write(b)
+}
+
+// Close closes the connection.
+func (c *conn) Close() error {
+ if !c.ok() {
+ return syscall.EINVAL
+ }
+ return c.fd.Close()
+}
+
+// LocalAddr returns the local network address.
+func (c *conn) LocalAddr() Addr {
+ if !c.ok() {
+ return nil
+ }
+ return c.fd.laddr
+}
+
+// RemoteAddr returns the remote network address.
+func (c *conn) RemoteAddr() Addr {
+ if !c.ok() {
+ return nil
+ }
+ return c.fd.raddr
+}
+
+// SetDeadline implements the Conn SetDeadline method.
+func (c *conn) SetDeadline(t time.Time) error {
+ if !c.ok() {
+ return syscall.EINVAL
+ }
+ return setDeadline(c.fd, t)
+}
+
+// SetReadDeadline implements the Conn SetReadDeadline method.
+func (c *conn) SetReadDeadline(t time.Time) error {
+ if !c.ok() {
+ return syscall.EINVAL
+ }
+ return setReadDeadline(c.fd, t)
+}
+
+// SetWriteDeadline implements the Conn SetWriteDeadline method.
+func (c *conn) SetWriteDeadline(t time.Time) error {
+ if !c.ok() {
+ return syscall.EINVAL
+ }
+ return setWriteDeadline(c.fd, t)
+}
+
+// SetReadBuffer sets the size of the operating system's
+// receive buffer associated with the connection.
+func (c *conn) SetReadBuffer(bytes int) error {
+ if !c.ok() {
+ return syscall.EINVAL
+ }
+ return setReadBuffer(c.fd, bytes)
+}
+
+// SetWriteBuffer sets the size of the operating system's
+// transmit buffer associated with the connection.
+func (c *conn) SetWriteBuffer(bytes int) error {
+ if !c.ok() {
+ return syscall.EINVAL
+ }
+ return setWriteBuffer(c.fd, bytes)
+}
+
+// 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 c does not affect f, and closing f does not affect c.
+func (c *conn) File() (f *os.File, err error) { return c.fd.dup() }
+
// An Error represents a network error.
type Error interface {
error
