Package org.yamcs.client.base

Class WebSocketClient

java.lang.Object

org.yamcs.client.base.WebSocketClient

public class WebSocketClient
extends Object

Netty-implementation of a Yamcs web socket client.

Constructor Summary

Constructors

Constructor	Description
WebSocketClient(ServerURL serverURL, WebSocketClientCallback callback)

Method Summary

Modifier and Type	Method	Description
<T extends com.google.protobuf.Message> Observer<T>	call(String type, DataObserver<? extends com.google.protobuf.Message> observer)	Initiates a new call.
void	cancelCall(int callId)
io.netty.channel.ChannelFuture	connect(String accessToken)
void	disconnect()
void	enableTcpKeepAlive(boolean enableTcpKeepAlive)	Enable/disable the TCP Keep-Alive on websocket sockets.
int	getMaxFramePayloadLength()
void	handleMessage(ServerMessage message)
boolean	isConnected()
boolean	isInsecureTls()
void	setCaCertFile(String caCertFile)	In case of https connections, this file contains the CA certificates that are used to verify server certificate
void	setConnectionTimeoutMs(int timeoutMs)
void	setInsecureTls(boolean insecureTls)	if true and https connections are used, do not verify server certificate
void	setMaxFramePayloadLength(int maxFramePayloadLength)
void	setMessageLogging(Level level)	Enables logging of all inbound and outbound messages on the request logging level.
void	setUserAgent(String userAgent)
io.netty.util.concurrent.Future<?>	shutdown()

Methods inherited from class java.lang.Object

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

Constructor Detail

WebSocketClient

public WebSocketClient(ServerURL serverURL,
                       WebSocketClientCallback callback)

Method Detail

setUserAgent

public void setUserAgent(String userAgent)

setConnectionTimeoutMs

public void setConnectionTimeoutMs(int timeoutMs)

setMessageLogging

public void setMessageLogging(Level level)

Enables logging of all inbound and outbound messages on the request logging level.

By default set to Level.FINEST

connect

public io.netty.channel.ChannelFuture connect(String accessToken)
                                       throws SSLException,
                                              GeneralSecurityException

Throws:

SSLException

GeneralSecurityException

call

public <T extends com.google.protobuf.Message> Observer<T> call(String type,
                                                                DataObserver<? extends com.google.protobuf.Message> observer)

Initiates a new call. This does not yet communicate to Yamcs. Use the returned observer to send one or more messages.

cancelCall

public void cancelCall(int callId)
                throws IOException

Throws:

IOException

disconnect

public void disconnect()

enableTcpKeepAlive

public void enableTcpKeepAlive(boolean enableTcpKeepAlive)

Enable/disable the TCP Keep-Alive on websocket sockets. By default it is disabled. It has to be enabled before the connection is established.

Parameters:

enableTcpKeepAlive - if true the TCP SO_KEEPALIVE option is set

shutdown

public io.netty.util.concurrent.Future<?> shutdown()

Returns:

the Future which is notified when the executor has been terminated.

isConnected

public boolean isConnected()

setCaCertFile

public void setCaCertFile(String caCertFile)
                   throws IOException,
                          GeneralSecurityException

In case of https connections, this file contains the CA certificates that are used to verify server certificate

Parameters:

caCertFile -

Throws:

IOException

GeneralSecurityException

isInsecureTls

public boolean isInsecureTls()

setInsecureTls

public void setInsecureTls(boolean insecureTls)

if true and https connections are used, do not verify server certificate

Parameters:

insecureTls -

getMaxFramePayloadLength

public int getMaxFramePayloadLength()

setMaxFramePayloadLength

public void setMaxFramePayloadLength(int maxFramePayloadLength)

handleMessage

public void handleMessage(ServerMessage message)
                   throws com.google.protobuf.InvalidProtocolBufferException

Throws:

com.google.protobuf.InvalidProtocolBufferException