64 lines
1.5 KiB
JavaScript
64 lines
1.5 KiB
JavaScript
var Stream = require('stream');
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var sockjs = require('sockjs-client');
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var resolve = require('url').resolve;
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var parse = require('url').parse;
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module.exports = function (u, cb) {
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var uri = parse(u).protocol ? u : resolve(window.location.href, u);
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var stream = new Stream;
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stream.readable = true;
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stream.writable = true;
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var ready = false;
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var buffer = [];
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var sock = sockjs(uri);
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stream.sock = sock;
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stream.write = function (msg) {
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if (!ready || buffer.length) buffer.push(msg)
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else sock.send(msg)
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};
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stream.end = function (msg) {
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if (msg !== undefined) stream.write(msg);
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if (!ready) {
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stream._ended = true;
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return;
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}
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stream.writable = false;
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sock.close();
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};
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stream.destroy = function () {
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stream._ended = true;
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stream.writable = stream.readable = false;
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buffer.length = 0
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sock.close();
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};
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sock.onopen = function () {
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if (typeof cb === 'function') cb();
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ready = true;
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for (var i = 0; i < buffer.length; i++) {
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sock.send(buffer[i]);
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}
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buffer = [];
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stream.emit('connect');
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if (stream._ended) stream.end();
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};
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sock.onmessage = function (e) {
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stream.emit('data', e.data);
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};
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sock.onclose = function () {
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stream.emit('end');
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stream.writable = false;
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stream.readable = false;
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};
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return stream;
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};
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