Ok I have a rpc server package and a rpc client package. I'd like to ask the server to return all domains.
In server.go I import server.DomainServer and serve it over http.
In client.go I import client.DomainClient and send a rpc call to the listening server.
The response is empty [].
The expected response is ["dom1.de","dom2.de"]
Why is the response empty? How can I debug this?
Do I have to share the GetAllDomainsRequest and GetAllDomainsRequest struct so they have the same type, e.g. in a package called common?
Update: Ran wireshark to capture the response, and the response was, amongst other stuff, []string
server.go
package main
import (
"log"
"net/http"
"net/rpc"
"bitbucket.org/idalu/hostd/server"
)
func main() {
var authkey = "123"
ds := &server.DomainServer{
Authkey: authkey,
}
rpc.Register(ds)
rpc.HandleHTTP()
log.Fatalln(http.ListenAndServe(":1312", nil))
}
server/domain.go
package server
import (
"errors"
"fmt"
)
type DomainServer struct {
Authkey string
}
type GetAllDomainsRequest struct {
Authkey string
}
type GetAllDomainsResponse struct {
Domains []string
}
func (s *DomainServer) GetAllDomains(req GetAllDomainsRequest, rsp *GetAllDomainsResponse) error {
if req.Authkey != s.Authkey {
return errors.New("forbidden")
}
rsp = &GetAllDomainsResponse{
Domains: []string{"dom1.de", "dom2.de"},
}
fmt.Println(rsp)
return nil
}
client.go
package main
import (
"log"
"bitbucket.org/idalu/hostd/client"
)
func main() {
dc := &client.DomainClient{
Authkey: "123",
ServerAddr: "127.0.0.1:1312",
}
if e := dc.GetAllDomains(); e != nil {
log.Fatalln(e.Error())
}
}
client/domain.go
package client
import (
"fmt"
"net/rpc"
)
type DomainClient struct {
ServerAddr string
Authkey string
}
type GetAllDomainsRequest struct {
Authkey string
}
type GetAllDomainsResponse struct {
Domains []string
}
func (c *DomainClient) GetAllDomains() error {
client, e := rpc.DialHTTP("tcp", c.ServerAddr)
if e != nil {
return e
}
req := GetAllDomainsRequest{
Authkey: c.Authkey,
}
rsp := GetAllDomainsResponse{}
if e := client.Call("DomainServer.GetAllDomains", req, &rsp); e != nil {
return e
}
fmt.Println(rsp.Domains)
return nil
}
