Closes an open Connection.

Opens an new Connection to an AMQP broker.

The connections created by this module are supervised under amqp_client’s supervision tree. Please note that connections do not get restarted automatically by the supervision tree in case of a failure. If you need robust connections and channels, use monitors on the returned connection PID.

The connection parameters can be passed as a keyword list or as a AMQP URI.

When using a keyword list, the following options can be used:

Options

• :username - The name of a user registered with the broker (defaults to “guest”);
• :password - The password of user (defaults to “guest”);
• :virtual_host - The name of a virtual host in the broker (defaults to “/“);
• :host - The hostname of the broker (defaults to “localhost”);
• :port - The port the broker is listening on (defaults to 5672);
• :channel_max - The channel_max handshake parameter (defaults to 0);
• :frame_max - The frame_max handshake parameter (defaults to 0);
• :heartbeat - The hearbeat interval in seconds (defaults to 0 - turned off);
• :connection_timeout - The connection timeout in milliseconds (defaults to infinity);
• :ssl_options - Enable SSL by setting the location to cert files (defaults to none);
• :client_properties - A list of extra client properties to be sent to the server, defaults to [];
• :socket_options - Extra socket options. These are appended to the default options. See http://www.erlang.org/doc/man/inet.html#setopts-2 and http://www.erlang.org/doc/man/gen_tcp.html#connect-4 for descriptions of the available options.

Enabling SSL

To enable SSL, supply the following in the ssl_options field:

• cacertfile - Specifies the certificates of the root Certificate Authorities that we wish to implicitly trust;
• certfile - The client’s own certificate in PEM format;
• keyfile - The client’s private key in PEM format;

Example

AMQP.Connection.open port: 5671,
                     ssl_options: [cacertfile: '/path/to/testca/cacert.pem',
                                   certfile: '/path/to/client/cert.pem',
                                   keyfile: '/path/to/client/key.pem',
                                   # only necessary with intermediate CAs
                                   # depth: 2,
                                   verify: :verify_peer,
                                   fail_if_no_peer_cert: true]

Examples

iex> AMQP.Connection.open host: "localhost", port: 5672, virtual_host: "/", username: "guest", password: "guest"
{:ok, %AMQP.Connection{}}

iex> AMQP.Connection.open "amqp://guest:guest@localhost"
{:ok, %AMQP.Connection{}}