@@ -10,50 +10,6 @@ This document describes the URI format for defining connections between
1010applications and MongoDB instances in the official MongoDB :doc:`drivers
1111</applications/drivers>`.
1212
13- When you connect to a MongoDB database server, the MongoDB driver creates a
14- connection object that is instantiated once and then reused for every
15- operation during the lifetime of the connection.
16- A single connection object can represent multiple connections to
17- multiple :program:`mongod` or :program:`mongos` instances.
18-
19- The connection object
20- uses the options you specify when creating the connection.
21- The reuse of the connection object saves on the costs of setup and
22- teardown on connections.
23-
24- Beginning with the Fall 2012 driver releases, MongoDB uses two new connection classes for
25- the creation of connection objects:
26-
27- - ``MongoClient``: the standard connection class
28-
29- - ``MongoReplicaSetClient``: a connection class that some drivers use
30- separately for :term:`replica sets <replica set>`. Not all drivers use
31- a separate class for connections to replica sets. See the
32- :doc:`drivers </applications/drivers>` documentation for details.
33-
34- In MongoDB versions prior to the Fall 2012 driver releases, the connection classes vary from driver
35- to driver.
36-
37- When you start a :program:`mongod` or :program:`mongos` instance,
38- the program displays logging
39- information and then displays that it is waiting for a client
40- connection, as shown in the following example.
41-
42- .. code-block:: none
43-
44- Wed Nov 21 12:56:58 [websvr] admin web console waiting for connections on port 28017
45- Wed Nov 21 12:56:58 [initandlisten] waiting for connections on port 27017
46-
47- By default, MongoDB waits for connections on port 27017.
48-
49- You make socket connections to running :program:`mongod` or :program:`mongos` instances
50- through a MongoDB :doc:`driver </applications/drivers>` or
51- through the :program:`mongo` shell.
52-
53- .. note:: You *cannot* create a connection through HTTP on port 27017.
54- Specifically, you *cannot* connect to MongoDB by going to
55- ``http://localhost:27017`` in your web browser.
56-
5713.. index:: connections; connection string format
5814.. _connections-standard-connection-string-format:
5915
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