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3b2e9d2648
It seems like a good idea on the face of it, but lowWaterMarks are actually not useful, and in practice should always be set to zero. It would be worthwhile for writers if we actually did some kind of writev() type of thing, but actually this just delays calling write() and the overhead of doing a bunch of Buffer copies is not worth the slight benefit of calling write() fewer times.
113 lines
3.3 KiB
JavaScript
113 lines
3.3 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var common = require('../common');
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var assert = require('assert');
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var net = require('net');
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var binaryString = '';
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for (var i = 255; i >= 0; i--) {
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var s = '\'\\' + i.toString(8) + '\'';
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var S = eval(s);
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common.error(s +
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' ' +
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JSON.stringify(S) +
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' ' +
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JSON.stringify(String.fromCharCode(i)) +
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' ' +
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S.charCodeAt(0));
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assert.ok(S.charCodeAt(0) == i);
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assert.ok(S == String.fromCharCode(i));
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binaryString += S;
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}
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// safe constructor
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var echoServer = net.Server(function(connection) {
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console.error('SERVER got connection');
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connection.setEncoding('binary');
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connection.on('data', function(chunk) {
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common.error('SERVER recved: ' + JSON.stringify(chunk));
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connection.write(chunk, 'binary');
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});
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connection.on('end', function() {
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console.error('SERVER ending');
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connection.end();
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});
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});
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echoServer.listen(common.PORT);
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var recv = '';
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echoServer.on('listening', function() {
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console.error('SERVER listening');
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var j = 0;
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var c = net.createConnection({
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port: common.PORT
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});
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c.setEncoding('binary');
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c.on('data', function(chunk) {
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console.error('CLIENT data %j', chunk);
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var n = j + chunk.length;
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while (j < n && j < 256) {
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common.error('CLIENT write ' + j);
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c.write(String.fromCharCode(j), 'binary');
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j++;
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}
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if (j === 256) {
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console.error('CLIENT ending');
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c.end();
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}
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recv += chunk;
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});
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c.on('connect', function() {
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console.error('CLIENT connected, writing');
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c.write(binaryString, 'binary');
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});
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c.on('close', function() {
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console.error('CLIENT closed');
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console.dir(recv);
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echoServer.close();
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});
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c.on('finish', function() {
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console.error('CLIENT finished');
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});
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});
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process.on('exit', function() {
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console.log('recv: ' + JSON.stringify(recv));
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assert.equal(2 * 256, recv.length);
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var a = recv.split('');
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var first = a.slice(0, 256).reverse().join('');
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console.log('first: ' + JSON.stringify(first));
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var second = a.slice(256, 2 * 256).join('');
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console.log('second: ' + JSON.stringify(second));
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assert.equal(first, second);
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});
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