com.squareup.okhttp

Class Connection

java.lang.Object

com.squareup.okhttp.Connection

public final class Connection
extends Object

The sockets and streams of an HTTP, HTTPS, or HTTPS+SPDY connection. May be used for multiple HTTP request/response exchanges. Connections may be direct to the origin server or via a proxy.

Typically instances of this class are created, connected and exercised automatically by the HTTP client. Applications may use this class to monitor HTTP connections as members of a connection pool.

Do not confuse this class with the misnamed HttpURLConnection, which isn't so much a connection as a single request/response exchange.

Modern TLS

There are tradeoffs when selecting which options to include when negotiating a secure connection to a remote host. Newer TLS options are quite useful:

• Server Name Indication (SNI) enables one IP address to negotiate secure connections for multiple domain names.
• Application Layer Protocol Negotiation (ALPN) enables the HTTPS port (443) to be used for different HTTP and SPDY protocols.

Unfortunately, older HTTPS servers refuse to connect when such options are presented. Rather than avoiding these options entirely, this class allows a connection to be attempted with modern options and then retried without them should the attempt fail.

Constructor Summary

Constructors

Constructor and Description
Connection(ConnectionPool pool, Route route)

Method Summary

Modifier and Type	Method and Description
Handshake	getHandshake()
Protocol	getProtocol() Returns the protocol negotiated by this connection, or Protocol.HTTP_1_1 if no protocol has been negotiated.
Route	getRoute() Returns the route used by this connection.
Socket	getSocket() Returns the socket that this connection uses, or null if the connection is not currently connected.
String	toString() Returns a string containing a concise, human-readable description of this object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Connection

public Connection(ConnectionPool pool,
                  Route route)

Method Detail

getRoute

public Route getRoute()

Returns the route used by this connection.

getSocket

public Socket getSocket()

Returns the socket that this connection uses, or null if the connection is not currently connected.

getHandshake

public Handshake getHandshake()

getProtocol

public Protocol getProtocol()

Returns the protocol negotiated by this connection, or Protocol.HTTP_1_1 if no protocol has been negotiated.

toString

public String toString()

Description copied from class: Object

Returns a string containing a concise, human-readable description of this object. Subclasses are encouraged to override this method and provide an implementation that takes into account the object's type and data. The default implementation is equivalent to the following expression:

   getClass().getName() + '@' + Integer.toHexString(hashCode())

See Writing a useful toString method if you intend implementing your own toString method.

Overrides:

toString in class Object

Returns:

a printable representation of this object.