Package org.zeromq
Class ZMQ.Socket
java.lang.Object
org.zeromq.ZMQ.Socket
- All Implemented Interfaces:
Closeable
,AutoCloseable
- Enclosing class:
ZMQ
Inner class: Socket.
-
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
Bind to network interface.int
bindToRandomPort
(String addr) Bind to network interface to a random port.int
bindToRandomPort
(String addr, int min_port) Bind to network interface to a random port.int
bindToRandomPort
(String addr, int min_port, int max_port) Bind to network interface to a random port.int
bindToRandomPort
(String addr, int min_port, int max_port, int max_tries) Bind to network interface to a random port.void
close()
This is an explicit "destructor".void
Connect to remote application.protected void
construct
(ZMQ.Context ctx, int type) Initialize the JNI interfaceprotected void
destroy()
Free all resources used by JNI interface.void
disconnect
(String addr) Disconnect from a remote application.long
long
protected byte[]
getBytesSockopt
(int option) Get the socket option value, as a byte array.boolean
Indicate whether socket should keep only last received/to be sent message in its inbound/outbound queue.long
The 'ZMQ_EVENTS' option shall retrieve event flags for the specified socket.long
getFD()
The 'ZMQ_FD' option shall retrieve file descriptor associated with the 0MQ socket.long
getHWM()
byte[]
boolean
Indicate whether socket should only queue messages to completed connections.boolean
long
protected long
getLongSockopt
(int option) Get the socket option value, as a long.long
long
byte[]
boolean
byte[]
long
getRate()
long
long
int
long
long
long
long
int
long
long
getSwap()
long
long
long
long
int
getType()
The 'ZMQ_TYPE option shall retrieve the socket type for the specified 'socket'.boolean
boolean
The 'ZMQ_RCVMORE' option shall return a boolean value indicating if the multi-part message currently being read from the specified 'socket' has more message parts to follow.boolean
Start a monitoring socket where events can be received.final byte[]
recv()
Receive a message.int
recv
(byte[] buffer, int offset, int len, int flags) Receive a message in to a specified buffer.byte[]
recv
(int flags) Receive a message.int
recvByteBuffer
(ByteBuffer buffer, int flags) Receive a messagerecvStr()
Deprecated.recvStr
(int flags) Deprecated.userecvStr(int, Charset)
instead.Receive a message as a String.Receive a message as a String with a given Charset.int
recvZeroCopy
(ByteBuffer buffer, int len, int flags) Zero copy recvboolean
send
(byte[] msg, int flags) Send a message.boolean
send
(byte[] msg, int offset, int flags) Send a message.boolean
send
(byte[] msg, int offset, int len, int flags) boolean
Send a String.boolean
Send a String.int
sendByteBuffer
(ByteBuffer bb, int flags) Send a messageboolean
Send a String.boolean
sendZeroCopy
(ByteBuffer buffer, int len, int flags) Perform a zero copy send.void
setAffinity
(long affinity) Get the Affinity.void
setBacklog
(long backlog) protected void
setBytesSockopt
(int option, byte[] optval) Set the socket option value, given as a byte array.void
setConflate
(boolean conflate) Sets whether socket should keep only last received/to be sent message in its inbound/outbound queue.void
setGSSAPIPlainText
(boolean isPlaintext) void
setGSSAPIPrincipal
(byte[] principal) void
setGSSAPIServer
(boolean isServer) void
setGSSAPIServicePrincipal
(byte[] principal) void
setHWM
(long hwm) The 'ZMQ_HWM' option shall set the high water mark for the specified 'socket'.void
setIdentity
(byte[] identity) The 'ZMQ_IDENTITY' option shall set the identity of the specified 'socket'.void
setImmediate
(boolean immediate) Sets whether socket should only queue messages to completed connections.void
setIPv4Only
(boolean v4only) The 'ZMQ_IPV4ONLY' option shall set the underlying native socket type.void
setLinger
(long linger) The 'ZMQ_LINGER' option shall retrieve the period for pending outbound messages to linger in memory after closing the socket.protected void
setLongSockopt
(int option, long optval) Set the socket option value, given as a long.void
setMaxMsgSize
(long maxMsgSize) void
setMulticastHops
(long mcast_hops) Sets the time-to-live field in every multicast packet sent from this socket.void
setMulticastLoop
(boolean mcast_loop) The 'ZMQ_MCAST_LOOP' option shall control whether data sent via multicast transports using the specified 'socket' can also be received by the sending host via loopback.void
setPlainPassword
(byte[] password) Sets the password used for the PLAIN security mechanism.void
setPlainServer
(boolean plain) Sets if the socket is for a server using the PLAIN security mechanism.void
setPlainUsername
(byte[] username) Sets the username used for the PLAIN security mechanism.void
setProbeRouter
(boolean isProbeRouter) Sets whether the socket should automatically send an empty message when a new connection is made or accepted.void
setRate
(long rate) The 'ZMQ_RATE' option shall set the maximum send or receive data rate for multicast transports such as in the man page of zmq_pgm[7] using the specified 'socket'.void
setRcvHWM
(long rcvHWM) void
setReceiveBufferSize
(long rcvbuf) The 'ZMQ_RCVBUF' option shall set the underlying kernel receive buffer size for the 'socket' to the specified size in bytes.void
setReceiveTimeOut
(int timeout) Sets the timeout for receive operation on the socket.void
setReconnectIVL
(long reconnectIVL) void
setReconnectIVLMax
(long reconnectIVLMax) void
setRecoveryInterval
(long recovery_ivl) The 'ZMQ_RECOVERY_IVL' option shall set the recovery interval for multicast transports using the specified 'socket'.void
setReqCorrelate
(boolean isCorrelate) void
setReqRelaxed
(boolean isRelaxed) void
setRouterMandatory
(boolean mandatory) Sets the ROUTER socket behavior when an unroutable message is encountered.void
setSendBufferSize
(long sndbuf) The 'ZMQ_SNDBUF' option shall set the underlying kernel transmit buffer size for the 'socket' to the specified size in bytes.void
setSendTimeOut
(int timeout) Sets the timeout for send operation on the socket.void
setSndHWM
(long sndHWM) void
setSwap
(long swap) Get the Swap.void
setTCPKeepAlive
(long optVal) Override SO_KEEPALIVE socket option (where supported by OS) to enable keep-alive packets for a socket connection.void
setTCPKeepAliveCount
(long optVal) Override TCP_KEEPCNT socket option (where supported by OS).void
setTCPKeepAliveIdle
(long optVal) Override TCP_KEEPCNT (or TCP_KEEPALIVE on some OS) socket option (where supported by OS).void
setTCPKeepAliveInterval
(long optVal) Override TCP_KEEPINTVL socket option (where supported by OS).void
setXpubVerbose
(boolean verbose) Sets the XPUB socket behavior on new subscriptions and unsubscriptions.void
setZAPDomain
(byte[] domain) Sets the domain for ZAP (ZMQ RFC 27) authentication.void
subscribe
(byte[] topic) The 'ZMQ_SUBSCRIBE' option shall establish a new message filter on a 'ZMQ_SUB' socket.void
Unbind from network interface.void
unsubscribe
(byte[] topic) The 'ZMQ_UNSUBSCRIBE' option shall remove an existing message filter on a 'ZMQ_SUB' socket.
-
Constructor Details
-
Socket
Class constructor.- Parameters:
context
- a 0MQ context previously created.type
- the socket type.
-
-
Method Details
-
close
public void close()This is an explicit "destructor". It can be called to ensure the corresponding 0MQ Socket has been disposed of.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
-
getType
public int getType()The 'ZMQ_TYPE option shall retrieve the socket type for the specified 'socket'. The socket type is specified at socket creation time and cannot be modified afterwards.- Returns:
- the socket type.
- Since:
- 2.1.0
-
getLinger
public long getLinger()- Returns:
- the linger period.
- Since:
- 2.1.0
- See Also:
-
getReconnectIVL
public long getReconnectIVL()- Returns:
- the reconnectIVL.
- Since:
- 3.0.0
- See Also:
-
getBacklog
public long getBacklog()- Returns:
- the backlog.
- Since:
- 3.0.0
- See Also:
-
getReconnectIVLMax
public long getReconnectIVLMax()- Returns:
- the reconnectIVLMax.
- Since:
- 3.0.0
- See Also:
-
getMaxMsgSize
public long getMaxMsgSize()- Returns:
- the maxMsgSize.
- Since:
- 3.0.0
- See Also:
-
getSndHWM
public long getSndHWM()- Returns:
- the SndHWM.
- Since:
- 3.0.0
- See Also:
-
getRcvHWM
public long getRcvHWM()- Returns:
- the recvHWM period.
- Since:
- 3.0.0
- See Also:
-
getHWM
public long getHWM()- Returns:
- the High Water Mark.
- See Also:
-
getSwap
public long getSwap()- Returns:
- the number of messages to swap at most.
- See Also:
-
getAffinity
public long getAffinity()- Returns:
- the affinity.
- See Also:
-
getTCPKeepAliveSetting
public long getTCPKeepAliveSetting()- Returns:
- the keep alive setting.
- See Also:
-
getTCPKeepAliveIdle
public long getTCPKeepAliveIdle()- Returns:
- the keep alive idle value.
- See Also:
-
getTCPKeepAliveInterval
public long getTCPKeepAliveInterval()- Returns:
- the keep alive interval.
- See Also:
-
getTCPKeepAliveCount
public long getTCPKeepAliveCount()- Returns:
- the keep alive count.
- See Also:
-
getIdentity
public byte[] getIdentity()- Returns:
- the Identitiy.
- See Also:
-
getRate
public long getRate()- Returns:
- the Rate.
- See Also:
-
getRecoveryInterval
public long getRecoveryInterval()- Returns:
- the RecoveryIntervall.
- See Also:
-
hasMulticastLoop
public boolean hasMulticastLoop()- Returns:
- the Multicast Loop.
- See Also:
-
setMulticastHops
public void setMulticastHops(long mcast_hops) Sets the time-to-live field in every multicast packet sent from this socket. The default is 1 which means that the multicast packets don't leave the local network.- Parameters:
mcast_hops
-
-
getMulticastHops
public long getMulticastHops()- Returns:
- the Multicast Hops.
- See Also:
-
setReceiveTimeOut
public void setReceiveTimeOut(int timeout) Sets the timeout for receive operation on the socket. If the value is 0, recv will return immediately, with a EAGAIN error if there is no message to receive. If the value is -1, it will block until a message is available. For all other values, it will wait for a message for that amount of time before returning with an EAGAIN error.- Parameters:
timeout
- Timeout for receive operation in milliseconds. Default -1 (infinite)
-
getReceiveTimeOut
public int getReceiveTimeOut()- Returns:
- the Receive Timeout in milliseconds
- See Also:
-
setSendTimeOut
public void setSendTimeOut(int timeout) Sets the timeout for send operation on the socket. If the value is 0, send will return immediately, with a EAGAIN error if the message cannot be sent. If the value is -1, it will block until the message is sent. For all other values, it will try to send the message for that amount of time before returning with an EAGAIN error.- Parameters:
timeout
- Timeout for send operation in milliseconds. Default -1 (infinite)
-
getSendTimeOut
public int getSendTimeOut()- Returns:
- the Send Timeout. in milliseconds
- See Also:
-
getSendBufferSize
public long getSendBufferSize()- Returns:
- the kernel send buffer size.
- See Also:
-
getReceiveBufferSize
public long getReceiveBufferSize()- Returns:
- the kernel receive buffer size.
- See Also:
-
getIPv4Only
public boolean getIPv4Only()- Returns:
- the IPv4 only socket.
- See Also:
-
getPlainServer
public boolean getPlainServer()- Returns:
- if the socket is setup for PLAIN security
- See Also:
-
getPlainUsername
public byte[] getPlainUsername()- Returns:
- null terminated byte array in server charset
- See Also:
-
getPlainPassword
public byte[] getPlainPassword()- Returns:
- null terminated byte array in server charset
- See Also:
-
hasReceiveMore
public boolean hasReceiveMore()The 'ZMQ_RCVMORE' option shall return a boolean value indicating if the multi-part message currently being read from the specified 'socket' has more message parts to follow. If there are no message parts to follow or if the message currently being read is not a multi-part message a value of zero shall be returned. Otherwise, a value of 1 shall be returned.- Returns:
- true if there are more messages to receive.
-
getFD
public long getFD()The 'ZMQ_FD' option shall retrieve file descriptor associated with the 0MQ socket. The descriptor can be used to integrate 0MQ socket into an existing event loop. It should never be used for anything else than polling -- such as reading or writing. The descriptor signals edge-triggered IN event when something has happened within the 0MQ socket. It does not necessarily mean that the messages can be read or written. Check ZMQ_EVENTS option to find out whether the 0MQ socket is readable or writeable.- Returns:
- the underlying file descriptor.
- Since:
- 2.1.0
-
getEvents
public long getEvents()The 'ZMQ_EVENTS' option shall retrieve event flags for the specified socket. If a message can be read from the socket ZMQ_POLLIN flag is set. If message can be written to the socket ZMQ_POLLOUT flag is set.- Returns:
- the mask of outstanding events.
- Since:
- 2.1.0
-
setLinger
public void setLinger(long linger) The 'ZMQ_LINGER' option shall retrieve the period for pending outbound messages to linger in memory after closing the socket. Value of -1 means infinite. Pending messages will be kept until they are fully transferred to the peer. Value of 0 means that all the pending messages are dropped immediately when socket is closed. Positive value means number of milliseconds to keep trying to send the pending messages before discarding them.- Parameters:
linger
- the linger period.- Since:
- 2.1.0
-
setReconnectIVL
public void setReconnectIVL(long reconnectIVL) - Since:
- 3.0.0
-
setBacklog
public void setBacklog(long backlog) - Since:
- 3.0.0
-
setReconnectIVLMax
public void setReconnectIVLMax(long reconnectIVLMax) - Since:
- 3.0.0
-
setMaxMsgSize
public void setMaxMsgSize(long maxMsgSize) - Since:
- 3.0.0
-
setSndHWM
public void setSndHWM(long sndHWM) - Since:
- 3.0.0
-
setRcvHWM
public void setRcvHWM(long rcvHWM) - Since:
- 3.0.0
-
setHWM
public void setHWM(long hwm) The 'ZMQ_HWM' option shall set the high water mark for the specified 'socket'. The high water mark is a hard limit on the maximum number of outstanding messages 0MQ shall queue in memory for any single peer that the specified 'socket' is communicating with. If this limit has been reached the socket shall enter an exceptional state and depending on the socket type, 0MQ shall take appropriate action such as blocking or dropping sent messages. Refer to the individual socket descriptions in the man page of zmq_socket[3] for details on the exact action taken for each socket type.- Parameters:
hwm
- the number of messages to queue.
-
setSwap
public void setSwap(long swap) Get the Swap. The 'ZMQ_SWAP' option shall set the disk offload (swap) size for the specified 'socket'. A socket which has 'ZMQ_SWAP' set to a non-zero value may exceed its high water mark; in this case outstanding messages shall be offloaded to storage on disk rather than held in memory.- Parameters:
swap
- The value of 'ZMQ_SWAP' defines the maximum size of the swap space in bytes.
-
setAffinity
public void setAffinity(long affinity) Get the Affinity. The 'ZMQ_AFFINITY' option shall set the I/O thread affinity for newly created connections on the specified 'socket'. Affinity determines which threads from the 0MQ I/O thread pool associated with the socket's _context_ shall handle newly created connections. A value of zero specifies no affinity, meaning that work shall be distributed fairly among all 0MQ I/O threads in the thread pool. For non-zero values, the lowest bit corresponds to thread 1, second lowest bit to thread 2 and so on. For example, a value of 3 specifies that subsequent connections on 'socket' shall be handled exclusively by I/O threads 1 and 2. See also in the man page of zmq_init[3] for details on allocating the number of I/O threads for a specific _context_.- Parameters:
affinity
- the affinity.
-
setTCPKeepAlive
public void setTCPKeepAlive(long optVal) Override SO_KEEPALIVE socket option (where supported by OS) to enable keep-alive packets for a socket connection. Possible values are -1, 0, 1. The default value -1 will skip all overrides and do the OS default.- Parameters:
optVal
- The value of 'ZMQ_TCP_KEEPALIVE' to turn TCP keepalives on (1) or off (0).
-
setTCPKeepAliveCount
public void setTCPKeepAliveCount(long optVal) Override TCP_KEEPCNT socket option (where supported by OS). The default value -1 will skip all overrides and do the OS default.- Parameters:
optVal
- The value of 'ZMQ_TCP_KEEPALIVE_CNT' defines the number of keepalives before death.
-
setTCPKeepAliveInterval
public void setTCPKeepAliveInterval(long optVal) Override TCP_KEEPINTVL socket option (where supported by OS). The default value -1 will skip all overrides and do the OS default.- Parameters:
optVal
- The value of 'ZMQ_TCP_KEEPALIVE_INTVL' defines the interval between keepalives. Unit is OS dependant.
-
setTCPKeepAliveIdle
public void setTCPKeepAliveIdle(long optVal) Override TCP_KEEPCNT (or TCP_KEEPALIVE on some OS) socket option (where supported by OS). The default value -1 will skip all overrides and do the OS default.- Parameters:
optVal
- The value of 'ZMQ_TCP_KEEPALIVE_IDLE' defines the interval between the last data packet sent over the socket and the first keepalive probe. Unit is OS dependant.
-
setIdentity
public void setIdentity(byte[] identity) The 'ZMQ_IDENTITY' option shall set the identity of the specified 'socket'. Socket identity determines if existing 0MQ infastructure (_message queues_, _forwarding devices_) shall be identified with a specific application and persist across multiple runs of the application. If the socket has no identity, each run of an application is completely separate from other runs. However, with identity set the socket shall re-use any existing 0MQ infrastructure configured by the previous run(s). Thus the application may receive messages that were sent in the meantime, _message queue_ limits shall be shared with previous run(s) and so on. Identity should be at least one byte and at most 255 bytes long. Identities starting with binary zero are reserved for use by 0MQ infrastructure.- Parameters:
identity
-
-
subscribe
public void subscribe(byte[] topic) The 'ZMQ_SUBSCRIBE' option shall establish a new message filter on a 'ZMQ_SUB' socket. Newly created 'ZMQ_SUB' sockets shall filter out all incoming messages, therefore you should call this option to establish an initial message filter. An empty 'option_value' of length zero shall subscribe to all incoming messages. A non-empty 'option_value' shall subscribe to all messages beginning with the specified prefix. Mutiple filters may be attached to a single 'ZMQ_SUB' socket, in which case a message shall be accepted if it matches at least one filter.- Parameters:
topic
-
-
unsubscribe
public void unsubscribe(byte[] topic) The 'ZMQ_UNSUBSCRIBE' option shall remove an existing message filter on a 'ZMQ_SUB' socket. The filter specified must match an existing filter previously established with the 'ZMQ_SUBSCRIBE' option. If the socket has several instances of the same filter attached the 'ZMQ_UNSUBSCRIBE' option shall remove only one instance, leaving the rest in place and functional.- Parameters:
topic
-
-
setRate
public void setRate(long rate) The 'ZMQ_RATE' option shall set the maximum send or receive data rate for multicast transports such as in the man page of zmq_pgm[7] using the specified 'socket'.- Parameters:
rate
-
-
setRecoveryInterval
public void setRecoveryInterval(long recovery_ivl) The 'ZMQ_RECOVERY_IVL' option shall set the recovery interval for multicast transports using the specified 'socket'. The recovery interval determines the maximum time in seconds (before version 3.0.0) or milliseconds (version 3.0.0 and after) that a receiver can be absent from a multicast group before unrecoverable data loss will occur. CAUTION: Exercise care when setting large recovery intervals as the data needed for recovery will be held in memory. For example, a 1 minute recovery interval at a data rate of 1Gbps requires a 7GB in-memory buffer. {Purpose of this Method}- Parameters:
recovery_ivl
-
-
setMulticastLoop
public void setMulticastLoop(boolean mcast_loop) The 'ZMQ_MCAST_LOOP' option shall control whether data sent via multicast transports using the specified 'socket' can also be received by the sending host via loopback. A value of zero disables the loopback functionality, while the default value of 1 enables the loopback functionality. Leaving multicast loopback enabled when it is not required can have a negative impact on performance. Where possible, disable 'ZMQ_MCAST_LOOP' in production environments.- Parameters:
mcast_loop
-
-
setSendBufferSize
public void setSendBufferSize(long sndbuf) The 'ZMQ_SNDBUF' option shall set the underlying kernel transmit buffer size for the 'socket' to the specified size in bytes. A value of zero means leave the OS default unchanged. For details please refer to your operating system documentation for the 'SO_SNDBUF' socket option.- Parameters:
sndbuf
-
-
setReceiveBufferSize
public void setReceiveBufferSize(long rcvbuf) The 'ZMQ_RCVBUF' option shall set the underlying kernel receive buffer size for the 'socket' to the specified size in bytes. A value of zero means leave the OS default unchanged. For details refer to your operating system documentation for the 'SO_RCVBUF' socket option.- Parameters:
rcvbuf
-
-
setIPv4Only
public void setIPv4Only(boolean v4only) The 'ZMQ_IPV4ONLY' option shall set the underlying native socket type. An IPv6 socket lets applications connect to and accept connections from both IPv4 and IPv6 hosts.- Parameters:
v4only
- A value of true will use IPv4 sockets, while the value of false will use IPv6 sockets
-
setRouterMandatory
public void setRouterMandatory(boolean mandatory) Sets the ROUTER socket behavior when an unroutable message is encountered.- Parameters:
mandatory
- A value of false is the default and discards the message silently when it cannot be routed. A value of true returns an EHOSTUNREACH error code if the message cannot be routed.
-
setXpubVerbose
public void setXpubVerbose(boolean verbose) Sets the XPUB socket behavior on new subscriptions and unsubscriptions.- Parameters:
verbose
- A value of false is the default and passes only new subscription messages to upstream. A value of true passes all subscription messages upstream.- Since:
- 3.2.2
-
setPlainServer
public void setPlainServer(boolean plain) Sets if the socket is for a server using the PLAIN security mechanism.- Parameters:
plain
- whether or not to use PLAIN security- Since:
- 4.0.0
- See Also:
-
setPlainUsername
public void setPlainUsername(byte[] username) Sets the username used for the PLAIN security mechanism.- Parameters:
username
- null terminated string in server charset- Since:
- 4.0.0
- See Also:
-
setPlainPassword
public void setPlainPassword(byte[] password) Sets the password used for the PLAIN security mechanism.- Parameters:
password
- null terminated string in server charset- Since:
- 4.0.0
- See Also:
-
setZAPDomain
public void setZAPDomain(byte[] domain) Sets the domain for ZAP (ZMQ RFC 27) authentication.- Parameters:
domain
- For NULL security (the default on all tcp:// connections), ZAP authentication only happens if you set a non-empty domain. For PLAIN and CURVE security, ZAP requests are always made, if there is a ZAP handler present. See http://rfc.zeromq.org/spec:27 for more details.
-
setGSSAPIServer
public void setGSSAPIServer(boolean isServer) -
setGSSAPIPrincipal
public void setGSSAPIPrincipal(byte[] principal) -
setGSSAPIServicePrincipal
public void setGSSAPIServicePrincipal(byte[] principal) -
setGSSAPIPlainText
public void setGSSAPIPlainText(boolean isPlaintext) -
setConflate
public void setConflate(boolean conflate) Sets whether socket should keep only last received/to be sent message in its inbound/outbound queue.- Parameters:
conflate
- A value of false is the default which means socket preserves all messages with respect to the RECVHWM and SENDHWM options. A value of true means only last message is kept ignoring the RECVHWM and SENDHWM options.- Since:
- 4.0.0
-
getConflate
public boolean getConflate()Indicate whether socket should keep only last received/to be sent message in its inbound/outbound queue.- Returns:
- true if should keep only last received/to be sent message in its inbound/outbound queue.
- Since:
- 4.0.0
-
getImmediate
public boolean getImmediate()Indicate whether socket should only queue messages to completed connections.- Returns:
- true if should only queue messages to completed connections.
- Since:
- 3.2.0
-
setImmediate
public void setImmediate(boolean immediate) Sets whether socket should only queue messages to completed connections.- Parameters:
immediate
- A value of false is the default which means socket will not queue messages to to incomplete connections. This will cause the socket to block if there are no other connections, but will prevent queues from filling on pipes awaiting connection.- Since:
- 3.2.0
-
setReqRelaxed
public void setReqRelaxed(boolean isRelaxed) -
setReqCorrelate
public void setReqCorrelate(boolean isCorrelate) -
setProbeRouter
public void setProbeRouter(boolean isProbeRouter) Sets whether the socket should automatically send an empty message when a new connection is made or accepted. This may be set on REQ, DEALER, or ROUTER sockets connected to a ROUTER socket. The application must filter such empty messages.- Parameters:
isProbeRouter
- iftrue
, the socket will automatically send an empty message when a new connection is made or accepted; iffalse
, no such message will be sent- Since:
- 4.0.0
-
bind
Bind to network interface. Start listening for new connections.- Parameters:
addr
- the endpoint to bind to.
-
bindToRandomPort
Bind to network interface to a random port. Start listening for new connections.- Parameters:
addr
- the endpoint to bind to.
-
bindToRandomPort
Bind to network interface to a random port. Start listening for new connections.- Parameters:
addr
- the endpoint to bind to.min_port
- The minimum port in the range of ports to try.
-
bindToRandomPort
Bind to network interface to a random port. Start listening for new connections.- Parameters:
addr
- the endpoint to bind to.min_port
- The minimum port in the range of ports to try.max_port
- The maximum port in the range of ports to try.
-
bindToRandomPort
Bind to network interface to a random port. Start listening for new connections.- Parameters:
addr
- the endpoint to bind to.min_port
- The minimum port in the range of ports to try.max_port
- The maximum port in the range of ports to try.max_tries
- The number of attempt to bind.
-
unbind
Unbind from network interface. Stop listening for connections.- Parameters:
addr
- the endpoint to unbind from.
-
connect
Connect to remote application.- Parameters:
addr
- the endpoint to connect to.
-
disconnect
Disconnect from a remote application.- Parameters:
addr
- the endpoint to disconnect from.
-
monitor
Start a monitoring socket where events can be received.- Parameters:
addr
- the endpoint to receive events from. (must be inproc transport)events
- the events of interest.- Returns:
- true if monitor socket setup is successful
- Throws:
ZMQException
-
send
public boolean send(byte[] msg, int offset, int flags) Send a message.- Parameters:
msg
- the message to send, as an array of bytes.offset
- the offset of the message to send.flags
- the flags to apply to the send operation.- Returns:
- true if send was successful, false otherwise.
-
send
public boolean send(byte[] msg, int offset, int len, int flags) - Parameters:
msg
-offset
-len
-flags
-- Returns:
-
sendZeroCopy
Perform a zero copy send. The buffer must be allocated using ByteBuffer.allocateDirect- Parameters:
buffer
-len
-flags
-- Returns:
-
send
public boolean send(byte[] msg, int flags) Send a message.- Parameters:
msg
- the message to send, as an array of bytes.flags
- the flags to apply to the send operation.- Returns:
- true if send was successful, false otherwise.
-
send
Send a String.- Parameters:
msg
- the message to send, as a String.- Returns:
- true if send was successful, false otherwise.
-
sendMore
Send a String.- Parameters:
msg
- the message to send, as a String.- Returns:
- true if send was successful, false otherwise.
-
send
Send a String.- Parameters:
msg
- the message to send, as a String.flags
- the flags to apply to the send operation.- Returns:
- true if send was successful, false otherwise.
-
sendByteBuffer
Send a message- Parameters:
bb
- ByteBuffer payloadflags
- the flags to apply to the send operation- Returns:
- the number of bytes sent
-
recv
public byte[] recv(int flags) Receive a message.- Parameters:
flags
- the flags to apply to the receive operation.- Returns:
- the message received, as an array of bytes; null on error.
-
recv
public int recv(byte[] buffer, int offset, int len, int flags) Receive a message in to a specified buffer.- Parameters:
buffer
- byte[] to copy zmq message payload in to.offset
- offset in buffer to write datalen
- max bytes to write to buffer. If len is smaller than the incoming message size, the message will be truncated.flags
- the flags to apply to the receive operation.- Returns:
- the number of bytes read, -1 on error
-
recvZeroCopy
Zero copy recv- Parameters:
buffer
-len
-flags
-- Returns:
- bytes read, -1 on error
-
recv
public final byte[] recv()Receive a message.- Returns:
- the message received, as an array of bytes; null on error.
-
recvStr
Deprecated.userecvStr(Charset)
instead.Receive a message as a String with the default Charset.- Returns:
- the message received, as a String; null on error.
-
recvStr
Receive a message as a String with a given Charset.- Parameters:
charset
- the charset of the resulting string.- Returns:
- the message received, as a String; null on error.
-
recvStr
Deprecated.userecvStr(int, Charset)
instead.Receive a message as a String with the default charset.- Parameters:
flags
- the flags to apply to the receive operation.- Returns:
- the message received, as a String; null on error.
-
recvStr
Receive a message as a String.- Parameters:
flags
- the flags to apply to the receive operation.charset
- the charset of the resulting string.- Returns:
- the message received, as a String; null on error.
-
recvByteBuffer
Receive a message- Parameters:
buffer
-flags
-- Returns:
- bytes read, -1 on error
-
construct
Initialize the JNI interface -
destroy
protected void destroy()Free all resources used by JNI interface. -
getLongSockopt
protected long getLongSockopt(int option) Get the socket option value, as a long.- Parameters:
option
- ID of the option to set.- Returns:
- The socket option value (as a long).
-
getBytesSockopt
protected byte[] getBytesSockopt(int option) Get the socket option value, as a byte array.- Parameters:
option
- ID of the option to set.- Returns:
- The socket option value (as a byte array).
-
setLongSockopt
protected void setLongSockopt(int option, long optval) Set the socket option value, given as a long.- Parameters:
option
- ID of the option to set.optval
- value (as a long) to set the option to.
-
setBytesSockopt
protected void setBytesSockopt(int option, byte[] optval) Set the socket option value, given as a byte array.- Parameters:
option
- ID of the option to set.optval
- value (as a byte array) to set the option to.
-
recvStr(Charset)
instead.