tcp listener

This commit is contained in:
Radu Ioan Fericean
2012-01-24 17:22:04 +02:00
parent a61556094a
commit 745ee3f272
3 changed files with 25 additions and 19 deletions

3
.gitignore vendored
View File

@@ -1,3 +1,4 @@
*.a
*.6
bin/*
bin
.settings

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@@ -3,8 +3,8 @@ package main
import (
"fmt"
"log"
"net/rpc"
"net/http"
"net/rpc"
"time"
)
@@ -16,10 +16,10 @@ var raterList *RaterList
func (rl *RaterList) RegisterRater(clientAddress string, replay *byte) error {
time.Sleep(1 * time.Second) // wait a second for Rater to start serving
client, err := rpc.DialHTTP("tcp", clientAddress)
client, err := rpc.Dial("tcp", clientAddress)
if err != nil {
log.Panic("Could not connect to client!")
}
}
rl.clients[clientAddress] = client
log.Print(fmt.Sprintf("Server %v registered succesfully", clientAddress))
return nil
@@ -33,26 +33,26 @@ func handler(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, "</ol></body></html>")
}
func callRater(rl *RaterList){
func callRater(rl *RaterList) {
var reply float64
arg := 9.0
log.Print("Starting client polling.")
for{
for addr,client := range rl.clients {
for {
for addr, client := range rl.clients {
err := client.Call("Sumer.Square", arg, &reply)
if err != nil {
log.Print("Closing client!")
delete(rl.clients, addr)
}
fmt.Println(fmt.Sprintf("Result from rater(%v): %v", addr, reply))
fmt.Println(fmt.Sprintf("Result from rater(%v): %v", addr, reply))
}
time.Sleep(5 * time.Second)
}
}
func main() {
raterList = &RaterList{clients: make(map[string] *rpc.Client)}
raterList = &RaterList{clients: make(map[string]*rpc.Client)}
go callRater(raterList)
rpc.Register(raterList)
rpc.HandleHTTP()

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@@ -1,11 +1,11 @@
package main
import (
"net/rpc"
"net/http"
"math"
"log"
"flag"
"log"
"math"
"net"
"net/rpc"
)
var (
@@ -20,14 +20,14 @@ func (t *Sumer) Square(n float64, reply *float64) error {
return nil
}
func registerToServer(){
client,err := rpc.DialHTTP("tcp", *server)
func registerToServer() {
client, err := rpc.DialHTTP("tcp", *server)
if err != nil {
log.Panic("Cannot register to server!")
}
var reply byte
var reply byte
log.Print("Registering to server ", *server)
client.Call("RaterList.RegisterRater", *listen, &reply)
client.Call("RaterList.RegisterRater", *listen, &reply)
if err := client.Close(); err != nil {
log.Panic("Could not close server registration!")
}
@@ -39,5 +39,10 @@ func main() {
rpc.Register(arith)
rpc.HandleHTTP()
go registerToServer()
http.ListenAndServe(*listen, nil)
}
addr, err1 := net.ResolveTCPAddr("tcp", *listen)
l, err2 := net.ListenTCP("tcp", addr)
if err1 != nil || err2 != nil {
log.Panic("cannot create listener for specified address ", *listen)
}
rpc.Accept(l)
}