通过一个账户验证的例子演示FMS服务器端和客户端互相调用

流程如下：
1. 客户端在连接时提供账户信息用于验证
2. 服务器端进行账户信息验证
3. 如果验证成功调用客户端的onLoginOKCBS方法将一句问候语作为onLoginOKCBS的参数传递给客户端,
    同时onLoginOKCBS返回一句问候语给服务器端
4. 如果验证失败返回账户错误信息
5. 客户端调用服务器端的getInfoFromSrvCBC方法传入id为10005的消息参数获取服务器端当前时间

服务器端main.asc完整代码:

var error = {"details":"Please provide the correct user name and password!"};
var greeting="Welcome to our humble abode!";

application.onConnect = function(clientObj, userinfo)
{
    if( (userinfo != null) && userinfo.username=='admin' && userinfo.userpwd=='admin' )
    {
        application.acceptConnection(clientObj);
        //call定义在客户端NetConnection.client对象中的onLoginOKCBS
        clientObj.call("onLoginOKCBS", new loginOKHandler(), greeting);
        
        //定义给客户端调用的方法getInfoFromSrvCBC, 
        //var msg:Object = {"id":10005, "details":"GET_SRV_TIME"};
        clientObj.getInfoFromSrvCBC = function(msg)
        {
            var retval;
            switch(msg.id)
            {
                case 10005:    //获取系统时间
                    trace("msg.details: "+msg.details);
                    retval = new Date();
                    break;
            }
            return retval;
        }
    }
    else
    {
        application.rejectConnection(clientObj, error);
    }
};

loginOKHandler = function()
{
    this.onResult = function(res)    //获取onLoginOKCBS的返回值
    { 
        trace("client said: " + res); 
    } 
    this.onStatus = function(info)
    { 
        trace("Failed with code: " + info.code); 
    } 
};

 
客户端main.mxml部分关键代码:

            private function init():void
            {
                this.nc = new NetConnection();
                this.nc.client = this;        //指示应对其调用回调方法的对象
                this.nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
            }
            
            private function onNetStatus(event:NetStatusEvent):void
            {
                trace(event.info.code);
                switch(event.info.code)
                {
                    case "NetConnection.Connect.Success":
                        this.currentState = "LoginOKState";
                        break;
                    
                    case "NetConnection.Connect.Failed":
                        break;
                        
                    case "NetConnection.Connect.Rejected":
                        var rejreason:String = event.info.application.details;
                        Alert.show(rejreason, "ERROR");
                        break;
                        
                    case "NetConnection.Connect.Closed":
                        this.currentState = null;
                        break;
                }
            }            
            
            public function close():void{}
            
            //登入成功后由服务器端调用, obj为服务器端返回的欢迎信息
            public function onLoginOKCBS(obj:Object):String
            {
                this.lblSrvNotice.text = obj.toString();
                return "I just want to begin";
            }
            
            private function onBtnGetSrvTimeClick():void
            {
                this.responder = new Responder(onResult, onStatus);
                var msg:Object = {"id":10005, "details":"GET_SRV_TIME"};
                this.nc.call("getInfoFromSrvCBC", this.responder, msg);
            }
            
            private function onResult(obj:Object):void
            {
                this.tbSrvTime.text = obj.toString();
            }
            
            private function onStatus(obj:Object):void
            {
                var errcode:String = obj.code.toString();
                Alert.show("error code:" + errcode, "ERROR");
            }
            
            private function onBtnLoginClick():void
            {
                var username:String = this.tbUserName.text;
                var userpwd:String = this.tbUserPwd.text;
                var userinfo:Object = {"username":username, "userpwd":userpwd};
                this.nc.connect(this.srvurl, userinfo);
            }

工程文件下载(包含客户端和服务器端完整代码)：https://files.cnblogs.com/riafans/LoginDemo.zip