text: // 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');
  
  // Verify that ServerResponse.getHeader() works correctly even after
  // the response header has been sent. Issue 752 on github.
  
  var s = http.createServer(function(req, res) {
    var contentType = 'Content-Type';
    var plain = 'text/plain';
    res.setHeader(contentType, plain);
    assert.ok(!res.headersSent);
    res.writeHead(200);
    assert.ok(res.headersSent);
    res.end('hello world\n');
    // This checks that after the headers have been sent, getHeader works
    // and does not throw an exception (Issue 752)
    assert.doesNotThrow(
        function() {
          assert.equal(plain, res.getHeader(contentType));
        }
    );
  });
  
  s.listen(common.PORT, runTest);
  
  function runTest() {
    http.get({ port: common.PORT }, function(response) {
      response.on('end', function() {
        s.close();
      });
      response.resume();
    });
  }
  