HKExConn captures net.Conn

demo/Herradura.go

@@ -20,6 +20,7 @@ package main
 import (
 	"flag"
 	"fmt"
+
 	hkex "blitter.com/herradurakex"
 )
 

demo/client.go

@@ -4,15 +4,21 @@ import (
 	"bufio"
 	"fmt"
 	"net"
+
+	hkex "blitter.com/herradurakex"
 )
 
 func main() {
-	conn, err := net.Dial("tcp", "localhost:2000")
+	bareconn, err := net.Dial("tcp", "localhost:2000")
 	if err != nil {
 		// handle error
 	}
+
+	conn := hkex.NewHKExConn(&bareconn)
+	fmt.Printf("conn: %v\n", conn)
+
 	fmt.Fprintf(conn, "GET / HTTP/1.0\r\n\r\n")
-//	status, err := bufio.NewReader(conn).ReadString('\n')
+	//	status, err := bufio.NewReader(conn).ReadString('\n')
 	_, err = bufio.NewReader(conn).ReadString('\n')
 	// ...
 }

demo/server.go

@@ -5,6 +5,7 @@ import (
 	"io"
 	"log"
 	"net"
+	//  "blitter.com/herradurakex"
 )
 
 func main() {
@@ -26,14 +27,13 @@ func main() {
 
 		fmt.Println("Accepted client")
 
-
 		// Handle the connection in a new goroutine.
 		// The loop then returns to accepting, so that
 		// multiple connections may be served concurrently.
 		go func(c net.Conn) {
 			// Echo all incoming data.
 			io.Copy(c, c)
-			fmt.Println("Client sent:%v\n",c)
+			fmt.Println("Client sent:%v\n", c)
 			// Shut down the connection.
 			c.Close()
 		}(conn)

herradurakex.go

@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"math/big"
 	"math/rand"
+	"net"
 	"time"
 )
 
@@ -130,3 +131,29 @@ func (h *HerraduraKEx) String() string {
 		h.PeerD.Text(16),
 		h.fa.Text(16))
 }
+
+type HKExConn struct {
+	c net.Conn
+}
+
+// Return c coerced into a HKExConn (which implements interface net.Conn)
+func NewHKExConn(c *net.Conn) (hc *HKExConn) {
+	fmt.Println("** NewHKExConn wrapping net.Conn **")
+	return &HKExConn{*c}
+}
+
+func (hc HKExConn) Read(b []byte) (n int, err error) {
+	n, err = hc.c.Read(b)
+	if n > 0 {
+		fmt.Println("** hc.Read() wraps c.Read() **")
+	}
+	return
+}
+
+func (hc HKExConn) Write(b []byte) (n int, err error) {
+	n, err = hc.c.Write(b)
+	if n > 0 {
+		fmt.Printf("** hc.Write('%s') wraps c.Write() **\n", b)
+	}
+	return
+}