出于教育目的,我正在使用TCP创建与node.js的一些聊天。
我正在使用Windows控制台连接我的节点服务器,但是当我输入时,所有字符都是逐个流式传输的。他们没有成为弦乐。我如何设法处理这些流,以便我的用户不能写出完整的单词。
我的代码:
var net = require("net");
Array.prototype.remove = function(e) {
for (var i = 0; i < this.length; i++) {
if (e == this[i]) { return this.splice(i, 1); }
}
};
function Chatter(stream) {
this.name = null;
this.stream = stream;
}
var chatters = [];
var server = net.createServer(function(stream) {
var chatter = new Chatter(stream);
chatters.push(chatter);
stream.setTimeout(0);
stream.setEncoding("utf8");
stream.addListener("connect", function(){
stream.write("Hallo, wer bist du?:\n");
});
stream.addListener("data", function (data) {
if(chatter.name == null) {
chatter.name = data.match(/\S+/);
stream.write("....................\n");
chatters.forEach(function(c){
if (c != chatter) {
c.stream.write(chatter.name + " ist dem Chat beigetreten!\n");
}
});
return;
}
var command = data.match(/^\/(.*)/);
if (command) {
if (command[1] == 'users') {
chatters.forEach(function(c) {
stream.write("- " + c.name + "\n");
});
}
else if (command[1] == 'quit') {
stream.end();
}
}
chatters.forEach(function(c) {
if(c != chatter) {
c.stream.write(chatter.name + ": " + data);
}
});
});
stream.addListener("end", function(){
chatters.remove(chatter);
chatters.forEach(function(c) {
c.stream.write(chatter.name + " hat den Chat verlassen.\n");
});
stream.end();
});
});
server.listen(8000);
代码来自this site
的记录此外:
setEncoding('utf8')
应该改变数据的发射,但它对我不起作用: - (
答案 0 :(得分:2)
问题的解决方案是将所有收到的字符存储在缓冲区中,当遇到END_OF_NICK
字符时(例如\n
),请使用缓冲区作为名称。
var buffer = ""; // stores received characters
stream.addListener("data", function (data) {
if(chatter.name == null) { // still receiving characters for the name
buffer += data; // append received characters to the buffer
if (buffer.indexOf('\n') == -1) return; // if there's no END_OF_NICK character, keep waiting for it
chatter.name = buffer.match(/\S+/); // use the name in the buffer
// ...
}