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'use strict';
var common = require('../common');
var assert = require('assert');
var http = require('http');
var server = http.createServer(function(req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World\n');
}).listen(common.PORT);
var agent = new http.Agent({maxSockets: 1});
agent.on('free', function(socket, host, port) {
console.log('freeing socket. destroyed? ', socket.destroyed);
});
var requestOptions = {
agent: agent,
host: 'localhost',
port: common.PORT,
path: '/'
};
var request1 = http.get(requestOptions, function(response) {
// assert request2 is queued in the agent
var key = agent.getName(requestOptions);
assert(agent.requests[key].length === 1);
console.log('got response1');
request1.socket.on('close', function() {
console.log('request1 socket closed');
});
response.pipe(process.stdout);
response.on('end', function() {
console.log('response1 done');
/////////////////////////////////
//
// THE IMPORTANT PART
//
// It is possible for the socket to get destroyed and other work
// to run before the 'close' event fires because it happens on
// nextTick. This example is contrived because it destroys the
// socket manually at just the right time, but at Voxer we have
// seen cases where the socket is destroyed by non-user code
// then handed out again by an agent *before* the 'close' event
// is triggered.
request1.socket.destroy();
response.once('close', function() {
// assert request2 was removed from the queue
assert(!agent.requests[key]);
console.log("waiting for request2.onSocket's nextTick");
process.nextTick(function() {
// assert that the same socket was not assigned to request2,
// since it was destroyed.
assert(request1.socket !== request2.socket);
assert(!request2.socket.destroyed, 'the socket is destroyed');
});
});
});
});
var request2 = http.get(requestOptions, function(response) {
assert(!request2.socket.destroyed);
assert(request1.socket.destroyed);
// assert not reusing the same socket, since it was destroyed.
assert(request1.socket !== request2.socket);
console.log('got response2');
var gotClose = false;
var gotResponseEnd = false;
request2.socket.on('close', function() {
console.log('request2 socket closed');
gotClose = true;
done();
});
response.pipe(process.stdout);
response.on('end', function() {
console.log('response2 done');
gotResponseEnd = true;
done();
});
function done() {
if (gotResponseEnd && gotClose)
server.close();
}
});
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