Created
January 17, 2011 02:04
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the buggy example of http://golang.org/pkg/rpc/ with two fixes
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package main | |
import ( | |
"os" | |
"rpc" | |
"log" | |
"strconv" | |
"fmt" | |
"./arith" | |
) | |
func main() { | |
client, err := rpc.DialHTTP("tcp", os.Args[1]) | |
if err != nil { | |
log.Exit("dialing:", err) | |
} | |
// Synchronous call | |
n1,_ := strconv.Atoi(os.Args[3]) | |
n2,_ := strconv.Atoi(os.Args[4]) | |
args := &arith.Args{n1, n2} | |
// XXX works only with Multiply | |
var reply int | |
err = client.Call("Arith." + os.Args[2], args, &reply) | |
if err != nil { | |
log.Exit("arith error:", err) | |
} | |
fmt.Printf("Arith: %d*%d=%d\n", args.A, args.B, *reply) | |
} |
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package arith | |
import "os" | |
type Args struct { | |
A, B int | |
} | |
type Quotient struct { | |
Quo, Rem int | |
} | |
type Arith int | |
func (t *Arith) Multiply(args *Args, reply *int) os.Error { | |
*reply = args.A * args.B | |
return nil | |
} | |
func (t *Arith) Divide(args *Args, quo *Quotient) os.Error { | |
if args.B == 0 { | |
return os.ErrorString("divide by zero") | |
} | |
quo.Quo = args.A / args.B | |
quo.Rem = args.A % args.B | |
return nil | |
} |
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package main | |
import ( | |
"rpc" | |
"net" | |
"log" | |
"http" | |
"os" | |
"./arith" | |
) | |
func main() { | |
arith := new(arith.Arith) | |
rpc.Register(arith) | |
rpc.HandleHTTP() | |
l, e := net.Listen("tcp", ":" + os.Args[1]) | |
if e != nil { | |
log.Exit("listen error:", e) | |
} | |
http.Serve(l, nil) | |
} |
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--- a/aclient.go | |
+++ b/aclient.go | |
@@ -27,5 +27,5 @@ func main() { | |
if err != nil { | |
log.Exit("arith error:", err) | |
} | |
- fmt.Printf("Arith: %d*%d=%d\n", args.A, args.B, *reply) | |
+ fmt.Printf("Arith: %d*%d=%d\n", args.A, args.B, reply) | |
} |
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--- a/aclient.go | |
+++ b/aclient.go | |
@@ -22,7 +22,7 @@ func main() { | |
n2,_ := strconv.Atoi(os.Args[4]) | |
args := &arith.Args{n1, n2} | |
// XXX works only with Multiply | |
- var reply int | |
+ var reply *int | |
err = client.Call("Arith." + os.Args[2], args, &reply) | |
if err != nil { | |
log.Exit("arith error:", err) |
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include $(GOROOT)/src/Make.inc | |
TARG=aserver\ | |
aclient | |
SHARED=arith | |
all: $(SHARED:%=%.$O) $(TARG) | |
$(TARG): %: %.$O | |
$(LD) -o $@ $< | |
%.$O: %.go Makefile | |
$(GC) -o $@ $< | |
clean: | |
rm -f *.[$(OS)] $(TARG) $(CLEANFILES) |
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