test expire of state and enforce openID and procedure check

chatState.go

 	"io/ioutil"
 	"log"
 	"os"
+	"time"
 )
 
 //chat state that we might be use for collecting infomation from user
 	}
 	//we don't check Expire, we give the caller full control on
 	//how to deal wiht expired session
+
+	//check whether state is for the correct openID and procedure
+	if result.OpenID != openID {
+		err = errors.New("Error: State for " + openID + " is actually for " + result.OpenID)
+		return
+	}
+
+	if result.Procedure != procedure {
+		err = errors.New("Error: Proecdure for " + procedure + " is actually for " + result.Procedure)
+		return
+	}
 	return
 }
 
 func processProcedureState(state chatState) (err error) {
 	//send what we need to send
 	if isExpired(state.Expire) {
-		return errors.New("State has expired " + stae.Name)
+		return errors.New("State has expired " + state.Name)
 	}
 	//mark we have sent.
 
 
 func initTestEcho(openid string) (r chatState) {
 	r.Name = openid
-	r.Expire = 0
+	r.Expire = int32(time.Now().Unix() + 100)
 	return
 }