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main.go
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main.go
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package main
import (
"crypto/rsa"
"flag"
"github.com/RoboCup-SSL/ssl-game-controller/internal/app/client"
"github.com/RoboCup-SSL/ssl-game-controller/pkg/refproto"
"github.com/RoboCup-SSL/ssl-go-tools/pkg/sslconn"
"github.com/golang/protobuf/proto"
"log"
"net"
)
var udpAddress = flag.String("udpAddress", "224.5.23.1:10003", "The multicast address of ssl-game-controller")
var autoDetectAddress = flag.Bool("autoDetectHost", true, "Automatically detect the game-controller host and replace it with the host given in address")
var refBoxAddr = flag.String("address", "localhost:10008", "Address to connect to")
var privateKeyLocation = flag.String("privateKey", "", "A private key to be used to sign messages")
var teamName = flag.String("teamName", "Test Team", "The name of the team as it is sent by the referee")
var privateKey *rsa.PrivateKey
type Client struct {
conn net.Conn
token string
}
func main() {
flag.Parse()
privateKey = client.LoadPrivateKey(*privateKeyLocation)
if *autoDetectAddress {
host := client.DetectHost(*udpAddress)
if host != "" {
log.Print("Detected game-controller host: ", host)
*refBoxAddr = client.GetConnectionString(*refBoxAddr, host)
}
}
conn, err := net.Dial("tcp", *refBoxAddr)
if err != nil {
log.Fatal("could not connect to game-controller at ", *refBoxAddr)
}
defer conn.Close()
log.Printf("Connected to game-controller at %v", *refBoxAddr)
c := Client{}
c.conn = conn
c.register()
c.sendDesiredKeeper(3)
for {
c.ReplyToChoices()
}
}
func (c *Client) register() {
reply := refproto.ControllerToTeam{}
if err := sslconn.ReceiveMessage(c.conn, &reply); err != nil {
log.Fatal("Failed receiving controller reply: ", err)
}
if reply.GetControllerReply().NextToken == nil {
log.Fatal("Missing next token")
}
registration := refproto.TeamRegistration{}
registration.TeamName = teamName
if privateKey != nil {
registration.Signature = &refproto.Signature{Token: reply.GetControllerReply().NextToken, Pkcs1V15: []byte{}}
registration.Signature.Pkcs1V15 = client.Sign(privateKey, ®istration)
}
log.Print("Sending registration")
if err := sslconn.SendMessage(c.conn, ®istration); err != nil {
log.Fatal("Failed sending registration: ", err)
}
log.Print("Sent registration, waiting for reply")
reply = refproto.ControllerToTeam{}
if err := sslconn.ReceiveMessage(c.conn, &reply); err != nil {
log.Fatal("Failed receiving controller reply: ", err)
}
if reply.GetControllerReply().StatusCode == nil || *reply.GetControllerReply().StatusCode != refproto.ControllerReply_OK {
reason := ""
if reply.GetControllerReply().Reason != nil {
reason = *reply.GetControllerReply().Reason
}
log.Fatal("Registration rejected: ", reason)
}
log.Printf("Successfully registered as %v", *teamName)
if reply.GetControllerReply().NextToken != nil {
c.token = *reply.GetControllerReply().NextToken
} else {
c.token = ""
}
}
func (c *Client) sendDesiredKeeper(id int32) {
message := refproto.TeamToController_DesiredKeeper{DesiredKeeper: id}
request := refproto.TeamToController{Msg: &message}
c.sendRequest(&request)
}
func (c *Client) ReplyToChoices() {
request := refproto.ControllerToTeam{}
if err := sslconn.ReceiveMessage(c.conn, &request); err != nil {
log.Fatal("Failed receiving controller request: ", err)
}
if request.GetAdvantageChoice() != nil {
log.Printf("Received choice for: %v", *request.GetAdvantageChoice().Foul)
}
reply := refproto.TeamToController_AdvantageResponse_{AdvantageResponse: refproto.TeamToController_CONTINUE}
response := refproto.TeamToController{Msg: &reply}
c.sendRequest(&response)
}
func (c *Client) sendRequest(request *refproto.TeamToController) {
if privateKey != nil {
request.Signature = &refproto.Signature{Token: &c.token, Pkcs1V15: []byte{}}
request.Signature.Pkcs1V15 = client.Sign(privateKey, request)
}
log.Print("Sending ", proto.MarshalTextString(request))
if err := sslconn.SendMessage(c.conn, request); err != nil {
log.Fatalf("Failed sending request: %v (%v)", request, err)
}
log.Print("Waiting for reply...")
reply := refproto.ControllerToTeam{}
if err := sslconn.ReceiveMessage(c.conn, &reply); err != nil {
log.Fatal("Failed receiving controller reply: ", err)
}
log.Print("Received reply: ", proto.MarshalTextString(&reply))
if reply.GetControllerReply().StatusCode == nil || *reply.GetControllerReply().StatusCode != refproto.ControllerReply_OK {
log.Print("Message rejected: ", *reply.GetControllerReply().Reason)
}
if reply.GetControllerReply().NextToken != nil {
c.token = *reply.GetControllerReply().NextToken
} else {
c.token = ""
}
}