| // Copyright Joyent, Inc. and other Node contributors. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a |
| // copy of this software and associated documentation files (the |
| // "Software"), to deal in the Software without restriction, including |
| // without limitation the rights to use, copy, modify, merge, publish, |
| // distribute, sublicense, and/or sell copies of the Software, and to permit |
| // persons to whom the Software is furnished to do so, subject to the |
| // following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included |
| // in all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN |
| // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
| // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| // USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| 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 = 'localhost:' + common.PORT; |
| 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(); |
| } |
| }); |