From 21705cc16e581ac304fbccc0fc7c45a86a6d8268 Mon Sep 17 00:00:00 2001
From: Stephen McQuay <stephen@mcquay.me>
Date: Mon, 10 Mar 2014 00:04:45 -0700
Subject: [PATCH] Added encoding negociation to protocol

---
 botserv.go |  4 +++-
 robot.go   | 23 +++++++++++++++++++++--
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/botserv.go b/botserv.go
index 724fb82..0dd3053 100644
--- a/botserv.go
+++ b/botserv.go
@@ -1,8 +1,9 @@
 package main
 
 import (
-	"bitbucket.org/hackerbots/vector"
 	"fmt"
+
+	"bitbucket.org/hackerbots/vector"
 )
 
 type ClientConfig struct {
@@ -22,6 +23,7 @@ type GameParam struct {
 	MaxPoints int       `json:"max_points"`
 	Name      string    `json:"name"`
 	Type      string    `json:"type"`
+	Encoding  string    `json:"encoding"`
 }
 
 type StatsRequest struct {
diff --git a/robot.go b/robot.go
index 978499c..83fe9d7 100644
--- a/robot.go
+++ b/robot.go
@@ -1,14 +1,15 @@
 package main
 
 import (
-	"bitbucket.org/hackerbots/vector"
-	"code.google.com/p/go.net/websocket"
 	"errors"
 	"fmt"
 	"log"
 	"math"
 	"math/rand"
 	"sync"
+
+	"bitbucket.org/hackerbots/vector"
+	"code.google.com/p/go.net/websocket"
 )
 
 const maxSpeed = 100
@@ -86,6 +87,22 @@ func (r *robot) negociate() (err error) {
 	if err != nil {
 		return err
 	}
+
+	encodings := []string{}
+	err = websocket.JSON.Receive(r.ws, &encodings)
+	log.Printf("%+v", encodings)
+	desiredEncoding := "json"
+	for _, encoding := range encodings {
+		if "gob" == encoding {
+			desiredEncoding = encoding
+			break
+		}
+	}
+	err = websocket.JSON.Send(r.ws, desiredEncoding)
+	if err != nil {
+		return err
+	}
+
 	err = websocket.JSON.Receive(r.ws, &r.game)
 	if r.game.Type != "gameparam" {
 		return errors.New("didn't receive a good gameparam")
@@ -93,6 +110,8 @@ func (r *robot) negociate() (err error) {
 	if *verbose {
 		log.Printf("%s: game parameters: %+v", r.name, r.game)
 	}
+	// TODO: do something with r.game.Protocol
+	log.Printf("game params: %+v", r.game)
 
 	conf := ClientConfig{
 		ID: r.game.Name,