Bar graph added.

node_modules/needle/test/headers_spec.js

@@ -0,0 +1,203 @@
+var http    = require('http'),
+    helpers = require('./helpers'),
+    should  = require('should');
+
+var port = 54321;
+
+describe('request headers', function() {
+
+  var needle,
+      server,
+      existing_sockets,
+      original_defaultMaxSockets;
+
+  before(function(done) {
+    setTimeout(function() {
+      existing_sockets = get_active_sockets().length;
+      server = helpers.server({ port: port }, done);
+    }, 100);
+  })
+
+  after(function(done) {
+    server.close(done);
+  })
+
+  function send_request(opts, cb) {
+    needle.get('http://localhost:' + port, opts, cb);
+  }
+
+  function get_active_sockets() {
+    var handles = process._getActiveHandles();
+
+    return handles.filter(function(el) {
+      if (el.constructor.name.toString() == 'Socket') {
+        return el.destroyed !== true;
+      }
+    })
+  }
+
+  describe('old node versions (<0.11.4) with persistent keep-alive connections', function() {
+
+    before(function() {
+      delete require.cache[require.resolve('..')] // in case it was already loaded
+      original_defaultMaxSockets = http.Agent.defaultMaxSockets;
+      http.Agent.defaultMaxSockets = 5;
+      needle = require('..');
+    })
+
+    after(function() {
+      http.Agent.defaultMaxSockets = original_defaultMaxSockets;
+      delete require.cache[require.resolve('..')]
+    })
+
+    describe('default options', function() {
+
+      it('sends a Connection: close header', function(done) {
+        send_request({}, function(err, resp) {
+          resp.body.headers['connection'].should.eql('close');
+          done();
+        })
+      })
+
+      it('no open sockets remain after request', function(done) {
+        send_request({}, function(err, resp) {
+          setTimeout(function() {
+            get_active_sockets().length.should.eql(existing_sockets);
+            done();
+          }, 10)
+        });
+      })
+
+    })
+
+    describe('passing connection: close', function() {
+
+      it('sends a Connection: close header', function(done) {
+        send_request({ connection: 'close' }, function(err, resp) {
+          resp.body.headers['connection'].should.eql('close');
+          done();
+        })
+      })
+
+      it('no open sockets remain after request', function(done) {
+        send_request({ connection: 'close' }, function(err, resp) {
+          setTimeout(function() {
+            get_active_sockets().length.should.eql(existing_sockets);
+            done();
+          }, 10)
+        });
+      })
+
+    })
+
+    describe('passing connection: keep-alive', function() {
+
+      it('sends a Connection: keep-alive header (using options.headers.connection)', function(done) {
+        send_request({ headers: { connection: 'keep-alive' }}, function(err, resp) {
+          resp.body.headers['connection'].should.eql('keep-alive');
+          done();
+        })
+      })
+
+      it('sends a Connection: keep-alive header (using options.connection)', function(done) {
+        send_request({ connection: 'keep-alive' }, function(err, resp) {
+          resp.body.headers['connection'].should.eql('keep-alive');
+          done();
+        })
+      })
+
+      it('one open socket remain after request', function(done) {
+        send_request({ connection: 'keep-alive' }, function(err, resp) {
+          get_active_sockets().length.should.eql(existing_sockets + 1);
+          done();
+        });
+      })
+
+    })
+
+  })
+
+  describe('new node versions with smarter connection disposing', function() {
+
+    before(function() {
+      delete require.cache[require.resolve('..')]
+      original_defaultMaxSockets = http.Agent.defaultMaxSockets;
+      http.Agent.defaultMaxSockets = Infinity;
+      needle = require('..');
+    })
+
+    after(function() {
+      http.Agent.defaultMaxSockets = original_defaultMaxSockets;
+      delete require.cache[require.resolve('..')]
+    })
+
+    describe('default options', function() {
+
+      // TODO:
+      // this is weird. by default, new node versions set a 'close' header
+      // while older versions set a keep-alive header
+
+      it.skip('sets a Connection header', function(done) {
+        send_request({}, function(err, resp) {
+          // should.not.exist(resp.body.headers['connection']);
+          // done();
+        })
+      })
+
+      it.skip('one open sockets remain after request', function(done) {
+        send_request({}, function(err, resp) {
+          // get_active_sockets().length.should.eql(1);
+          // done();
+        });
+      })
+
+    })
+
+    describe('passing connection: close', function() {
+
+      it('sends a Connection: close header', function(done) {
+        send_request({ connection: 'close' }, function(err, resp) {
+          resp.body.headers['connection'].should.eql('close');
+          done();
+        })
+      })
+
+      it('no open sockets remain after request', function(done) {
+        send_request({ connection: 'close' }, function(err, resp) {
+          setTimeout(function() {
+            get_active_sockets().length.should.eql(existing_sockets);
+            done();
+          }, 10);
+        });
+      })
+
+    })
+
+    describe('passing connection: keep-alive', function() {
+
+      it('sends a Connection: keep-alive header (using options.headers.connection)', function(done) {
+        send_request({ headers: { connection: 'keep-alive' }}, function(err, resp) {
+          resp.body.headers['connection'].should.eql('keep-alive');
+          done();
+        })
+      })
+
+      it('sends a Connection: keep-alive header (using options.connection)', function(done) {
+        send_request({ connection: 'keep-alive' }, function(err, resp) {
+          resp.body.headers['connection'].should.eql('keep-alive');
+          done();
+        })
+      })
+
+      it('one open socket remain after request', function(done) {
+        send_request({ connection: 'keep-alive' }, function(err, resp) {
+          get_active_sockets().length.should.eql(existing_sockets + 1);
+          done();
+        });
+      })
+
+    })
+
+  })
+
+})