golang的rpc有两种方法进行调用，一种是rpc例子中给的：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
package main
import (
"net/rpc"
"net/http"
"log"
"net"
"time"
)
type Args struct {
A, B int
}
type Arith int
func (t *Arith) Multiply(args *Args, reply *([]string)) error {
*reply = append(*reply,
"test"
)
return
nil
}
func main() {
arith :=
new
(Arith)
rpc.Register(arith)
rpc.HandleHTTP()
l, e := net.Listen(
"tcp"
,
":1234"
)
if
e != nil {
log.Fatal(
"listen error:"
, e)
}
go http.Serve(l, nil)
time.Sleep(5 * time.Second)
client, err := rpc.DialHTTP(
"tcp"
,
"127.0.0.1"
+
":1234"
)
if
err != nil {
log.Fatal(
"dialing:"
, err)
}
args := &Args{7,8}
reply := make([]string, 10)
err = client.Call(
"Arith.Multiply"
, args, &reply)
if
err != nil {
log.Fatal(
"arith error:"
, err)
}
log.Println(reply)
}
|
另一种是使用NewServer
这种是当rpc已经注册的时候就要使用了另外一种了。即一个server只能在DefaultRPC中注册一种类型。
当Server使用rpc.NewServer的时候，client也需要进行下改动了
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
package main
import (
"net/rpc"
//"net/http"
"log"
"net"
"time"
)
type Args struct {
A, B int
}
type Arith int
func (t *Arith) Multiply(args *Args, reply *([]string)) error {
*reply = append(*reply,
"test"
)
return
nil
}
func main() {
newServer := rpc.NewServer()
newServer.Register(
new
(Arith))
l, e := net.Listen(
"tcp"
,
"127.0.0.1:1234"
)
// any available address
if
e != nil {
log.Fatalf(
"net.Listen tcp :0: %v"
, e)
}
go newServer.Accept(l)
newServer.HandleHTTP(
"/foo"
,
"/bar"
)
time.Sleep(2 * time.Second)
address, err := net.ResolveTCPAddr(
"tcp"
,
"127.0.0.1:1234"
)
if
err != nil {
panic(err)
}
conn, _ := net.DialTCP(
"tcp"
, nil, address)
defer conn.Close()
client := rpc.NewClient(conn)
defer client.Close()
args := &Args{7,8}
reply := make([]string, 10)
err = client.Call(
"Arith.Multiply"
, args, &reply)
if
err != nil {
log.Fatal(
"arith error:"
, err)
}
log.Println(reply)
}
|
|
1
|
第二个例子中的
|
|
1
|
newServer.HandleHTTP(
"/foo"
,
"/bar"
)
|
|
1
|
可以任意设置，第一个例子其实是设置了默认的两个
|
|
1
|
|
|
1
|
这里也顺便将reply作为[]slice的例子给演示了下
|
|
1
|
|
