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Erlang与ActionScript3采用JSON格式进行Socket通讯
http://hideto.iteye.com/blog/235811
需要下载as3corelib来为ActionScript3处理JSON codec
server.erl
Java代码
- -module(server).
- -export([start/0,start/1,process/1]).
- -define(defPort, 8888).
- start() -> start(?defPort).
- start(Port) ->
- case gen_tcp:listen(Port, [binary, {packet, 0}, {active, false}]) of
- {ok, LSock} -> server_loop(LSock);
- {error, Reason} -> exit({Port,Reason})
- end.
- %% main server loop - wait for next connection, spawn child to process it
- server_loop(LSock) ->
- case gen_tcp:accept(LSock) of
- {ok, Sock} ->
- spawn(?MODULE,process,[Sock]),
- server_loop(LSock);
- {error, Reason} ->
- exit({accept,Reason})
- end.
- %% process current connection
- process(Sock) ->
- Req = do_recv(Sock),
- io:format("~p~n", [Req]),
- {ok, D, []} = rfc4627:decode(Req),
- {obj, [{"name", _Name}, {"age", Age}]} = D,
- Name = binary_to_list(_Name),
- io:format("Name: ~p, Age: ~p~n", [Name, Age]),
- Resp = rfc4627:encode({obj, [{"name", ‘Hideto2‘}, {"age", 24}]}),
- do_send(Sock,Resp),
- gen_tcp:close(Sock).
- %% send a line of text to the socket
- do_send(Sock,Msg) ->
- case gen_tcp:send(Sock, Msg) of
- ok -> ok;
- {error, Reason} -> exit(Reason)
- end.
- %% receive data from the socket
- do_recv(Sock) ->
- case gen_tcp:recv(Sock, 0) of
- {ok, Bin} -> binary_to_list(Bin);
- {error, closed} -> exit(closed);
- {error, Reason} -> exit(Reason)
- end.
Person.as
Java代码
- package
- {
- public class Person
- {
- public var name:String;
- public var age:int;
- public function Person()
- {
- }
- }
- }
Client.as
Java代码
- package {
- import com.adobe.serialization.json.JSON;
- import flash.display.Sprite;
- import flash.events.*;
- import flash.net.Socket;
- import flash.text.*;
- public class Client extends Sprite
- {
- private var socket:Socket;
- private var myField:TextField;
- private var send_data:Person;
- public function Client()
- {
- socket = new Socket();
- myField = new TextField();
- send_data = new Person();
- send_data.name = "Hideto";
- send_data.age = 23;
- socket.addEventListener(ProgressEvent.SOCKET_DATA, onSocketData);
- socket.connect("localhost", 8888);
- socket.writeUTFBytes(JSON.encode(send_data));
- socket.flush();
- myField.x = 20;
- myField.y = 30;
- myField.text = "test";
- myField.autoSize = TextFieldAutoSize.LEFT;
- addChild(myField);
- }
- private function onSocketData(event:ProgressEvent):void {
- while(socket.bytesAvailable) {
- var recv_data:* = JSON.decode(socket.readUTFBytes(socket.bytesAvailable));
- myField.text = "Name: " + recv_data.name + ", age: " + recv_data.age.toString();
- }
- }
- }
- }
运行Erlang服务器端:
Java代码
- Eshell> c(server).
- Eshell> server:start().
- "{\"name\":\"Hideto\",\"age\":23}"
- Name: "Hideto", Age: 23
这里打印出了Erlang Socket Server接收到的AS3 Client发过来的JSON decode过的一个person对象
运行AS3客户端:
client.html上首先显示“test”,然后异步处理完Socket消息发送和接受后,decode Erlang Server端发过来的person对象,将页面上的TextField替换为“Name: Hideto2, age: 24”
Erlang与ActionScript3采用JSON格式进行Socket通讯
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