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| java.lang.Object | |
| ↳ | org.apache.http.impl.conn.AbstractClientConnAdapter |
 Known Direct Subclasses
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Known Indirect Subclasses
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Abstract adapter from operated to
managed client connections.
Read and write methods are delegated to the wrapped connection.
Operations affecting the connection state have to be implemented
by derived classes. Operations for querying the connection state
are delegated to the wrapped connection if there is one, or
return a default value if there is none.
This adapter tracks the checkpoints for reusable communication states,
as indicated by markReusable and queried by
isMarkedReusable.
All send and receive operations will automatically clear the mark.
Connection release calls are delegated to the connection manager,
if there is one. abortConnection will
clear the reusability mark first. The connection manager is
expected to tolerate multiple calls to the release method.
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Creates a new connection adapter.
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Releases the connection without the option of keep-alive.
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Writes out all pending buffered data over the open connection.
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Returns a collection of connection metrcis
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Obtains the SSL session of the underlying connection, if any.
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Returns the socket timeout value.
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Indicates whether this connection is in a reusable communication state.
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Checks if this connection is open.
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Checks if response data is available from the connection.
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Indicates whether this connection is secure.
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Checks whether this connection has gone down.
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Marks this connection as being in a reusable communication state.
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Receives the next response entity available from this connection and
attaches it to an existing HttpResponse object.
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Receives the request line and headers of the next response available from
this connection.
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Releases the connection with the option of keep-alive.
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Sends the request entity over the connection.
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Sends the request line and all headers over the connection.
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Sets the duration that this connection can remain idle before it is
reused.
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Sets the socket timeout value.
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Marks this connection as not being in a reusable state.
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Asserts that the connection has not been aborted.
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Asserts that there is a wrapped connection to delegate to.
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Detaches this adapter from the wrapped connection.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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From interface
org.apache.http.HttpClientConnection
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From interface
org.apache.http.HttpConnection
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From interface
org.apache.http.HttpInetConnection
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From interface
org.apache.http.conn.ConnectionReleaseTrigger
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From interface
org.apache.http.conn.ManagedClientConnection
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Creates a new connection adapter.
The adapter is initially not
marked as reusable.
| mgr | the connection manager, or null |
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| conn | the connection to wrap, or null
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Releases the connection without the option of keep-alive.
This is a "hard" release that implies a shutdown of the connection.
Use releaseConnection for a graceful release.
Writes out all pending buffered data over the open connection.
| IOException |
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Returns a collection of connection metrcis
Obtains the SSL session of the underlying connection, if any.
If this connection is open, and the underlying socket is an
SSLSocket, the SSL session of
that socket is obtained. This is a potentially blocking operation.
Note: Whether the underlying socket is an SSL socket
can not necessarily be determined via isSecure().
Plain sockets may be considered secure, for example if they are
connected to a known host in the same network segment.
On the other hand, SSL sockets may be considered insecure,
for example depending on the chosen cipher suite.
null otherwise
Returns the socket timeout value.
0 if timeout is disabled or -1 if
timeout is undefined.
Indicates whether this connection is in a reusable communication state.
See markReusable and
unmarkReusable for details.
true if this connection is marked as being in
a reusable communication state,
false otherwise
Checks if this connection is open.
Checks if response data is available from the connection. May wait for the specified time until some data becomes available. Note that some implementations may completely ignore the timeout parameter.
| timeout | the maximum time in milliseconds to wait for data |
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timeout milliseconds.| IOException |
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Indicates whether this connection is secure. The return value is well-defined only while the connection is open. It may change even while the connection is open.
true if this connection is secure,
false otherwise
Checks whether this connection has gone down. Network connections may get closed during some time of inactivity for several reasons. The next time a read is attempted on such a connection it will throw an IOException. This method tries to alleviate this inconvenience by trying to find out if a connection is still usable. Implementations may do that by attempting a read with a very small timeout. Thus this method may block for a small amount of time before returning a result. It is therefore an expensive operation.
true if attempts to use this connection are
likely to succeed, or false if they are likely
to fail and this connection should be closed
Marks this connection as being in a reusable communication state.
The checkpoints for reuseable communication states (in the absence
of pipelining) are before sending a request and after receiving
the response in it's entirety.
The connection will automatically clear the checkpoint when
used for communication. A call to this method indicates that
the next checkpoint has been reached.
A reusable communication state is necessary but not sufficient
for the connection to be reused.
A route mismatch, the connection being closed,
or other circumstances might prevent reuse.
Receives the next response entity available from this connection and attaches it to an existing HttpResponse object.
| response | the response to attach the entity to |
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| HttpException | |
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| IOException |
Receives the request line and headers of the next response available from this connection. The caller should examine the HttpResponse object to find out if it should try to receive a response entity as well.
| HttpException | |
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| IOException |
Releases the connection with the option of keep-alive. This is a
"graceful" release and may cause IO operations for consuming the
remainder of a response entity. Use
abortConnection for a hard release. The
connection may be reused as specified by the duration.
Sends the request entity over the connection.
| request | the request whose entity to send. |
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| HttpException | |
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| IOException |
Sends the request line and all headers over the connection.
| request | the request whose headers to send. |
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| HttpException | |
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| IOException |
Sets the duration that this connection can remain idle before it is reused. The connection should not be used again if this time elapses. The idle duration must be reset after each request sent over this connection. The elapsed time starts counting when the connection is released, which is typically after the headers (and any response body, if present) is fully consumed.
Sets the socket timeout value.
| timeout | timeout value in milliseconds |
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Marks this connection as not being in a reusable state.
This can be used immediately before releasing this connection
to prevent it's reuse. Reasons for preventing reuse include
error conditions and the evaluation of a
reuse strategy.
Note:
It is not necessary to call here before writing to
or reading from this connection. Communication attempts will
automatically unmark the state as non-reusable. It can then
be switched back using markReusable.
Asserts that the connection has not been aborted.
| InterruptedIOException | if the connection has been aborted |
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Asserts that there is a wrapped connection to delegate to.
| IllegalStateException | if there is no wrapped connection or connection has been aborted |
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Detaches this adapter from the wrapped connection. This adapter becomes useless.