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7041770108
The use of binary for CURVE keys is painful; you cannot easily copy these in e.g. email, or use them directly in source code. There are various encoding possibilities. Base16 and Base64 are not optimal. Ascii85 is not safe for source (it generates quotes and escapes). So, I've designed a new Base85 encoding, Z85, which is safe to use in code and elsewhere, and I've modified libzmq to use this where it also uses binary keys (in get/setsockopt). Very simply, if you use a 32-byte value, it's Base256 (binary), and if you use a 40-byte value, it's Base85 (Z85). I've put the Z85 codec into z85_codec.hpp, it's not elegant C++ but it is minimal and it works. Feel free to rewrap as a real class if this annoys you.
705 lines
25 KiB
Plaintext
705 lines
25 KiB
Plaintext
zmq_setsockopt(3)
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=================
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NAME
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----
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zmq_setsockopt - set 0MQ socket options
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SYNOPSIS
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--------
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*int zmq_setsockopt (void '*socket', int 'option_name', const void '*option_value', size_t 'option_len');*
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Caution: All options, with the exception of ZMQ_SUBSCRIBE, ZMQ_UNSUBSCRIBE,
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ZMQ_LINGER, ZMQ_ROUTER_MANDATORY, ZMQ_PROBE_ROUTER, ZMQ_XPUB_VERBOSE only
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take effect for subsequent socket bind/connects. Specifically, security
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options take effect for subsequent binds/connects and can be changed at any
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time to affect subsequent binds and/or connects.
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DESCRIPTION
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-----------
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The _zmq_setsockopt()_ function shall set the option specified by the
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'option_name' argument to the value pointed to by the 'option_value' argument
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for the 0MQ socket pointed to by the 'socket' argument. The 'option_len'
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argument is the size of the option value in bytes.
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The following socket options can be set with the _zmq_setsockopt()_ function:
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ZMQ_SNDHWM: Set high water mark for outbound messages
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_SNDHWM' option shall set the high water mark for outbound messages on
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the specified 'socket'. The high water mark is a hard limit on the maximum
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number of outstanding messages 0MQ shall queue in memory for any single peer
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that the specified 'socket' is communicating with. A value of zero means no
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limit.
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If this limit has been reached the socket shall enter an exceptional state and
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depending on the socket type, 0MQ shall take appropriate action such as
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blocking or dropping sent messages. Refer to the individual socket descriptions
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in linkzmq:zmq_socket[3] for details on the exact action taken for each socket
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type.
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NOTE: 0MQ does not guarantee that the socket will accept as many as ZMQ_SNDHWM
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messages, and the actual limit may be as much as 60-70% lower depending on the
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flow of messages on the socket.
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[horizontal]
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Option value type:: int
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Option value unit:: messages
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Default value:: 1000
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Applicable socket types:: all
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ZMQ_RCVHWM: Set high water mark for inbound messages
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_RCVHWM' option shall set the high water mark for inbound messages on
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the specified 'socket'. The high water mark is a hard limit on the maximum
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number of outstanding messages 0MQ shall queue in memory for any single peer
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that the specified 'socket' is communicating with. A value of zero means no
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limit.
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If this limit has been reached the socket shall enter an exceptional state and
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depending on the socket type, 0MQ shall take appropriate action such as
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blocking or dropping sent messages. Refer to the individual socket descriptions
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in linkzmq:zmq_socket[3] for details on the exact action taken for each socket
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type.
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[horizontal]
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Option value type:: int
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Option value unit:: messages
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Default value:: 1000
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Applicable socket types:: all
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ZMQ_AFFINITY: Set I/O thread affinity
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_AFFINITY' option shall set the I/O thread affinity for newly created
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connections on the specified 'socket'.
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Affinity determines which threads from the 0MQ I/O thread pool associated with
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the socket's _context_ shall handle newly created connections. A value of zero
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specifies no affinity, meaning that work shall be distributed fairly among all
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0MQ I/O threads in the thread pool. For non-zero values, the lowest bit
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corresponds to thread 1, second lowest bit to thread 2 and so on. For example,
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a value of 3 specifies that subsequent connections on 'socket' shall be handled
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exclusively by I/O threads 1 and 2.
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See also linkzmq:zmq_init[3] for details on allocating the number of I/O
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threads for a specific _context_.
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[horizontal]
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Option value type:: uint64_t
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Option value unit:: N/A (bitmap)
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Default value:: 0
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Applicable socket types:: N/A
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ZMQ_SUBSCRIBE: Establish message filter
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_SUBSCRIBE' option shall establish a new message filter on a 'ZMQ_SUB'
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socket. Newly created 'ZMQ_SUB' sockets shall filter out all incoming messages,
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therefore you should call this option to establish an initial message filter.
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An empty 'option_value' of length zero shall subscribe to all incoming
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messages. A non-empty 'option_value' shall subscribe to all messages beginning
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with the specified prefix. Multiple filters may be attached to a single
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'ZMQ_SUB' socket, in which case a message shall be accepted if it matches at
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least one filter.
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[horizontal]
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Option value type:: binary data
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Option value unit:: N/A
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Default value:: N/A
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Applicable socket types:: ZMQ_SUB
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ZMQ_UNSUBSCRIBE: Remove message filter
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_UNSUBSCRIBE' option shall remove an existing message filter on a
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'ZMQ_SUB' socket. The filter specified must match an existing filter previously
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established with the 'ZMQ_SUBSCRIBE' option. If the socket has several
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instances of the same filter attached the 'ZMQ_UNSUBSCRIBE' option shall remove
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only one instance, leaving the rest in place and functional.
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[horizontal]
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Option value type:: binary data
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Option value unit:: N/A
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Default value:: N/A
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Applicable socket types:: ZMQ_SUB
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ZMQ_IDENTITY: Set socket identity
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_IDENTITY' option shall set the identity of the specified 'socket'.
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Socket identity is used only by request/reply pattern. Namely, it can be used
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in tandem with ROUTER socket to route messages to the peer with specific
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identity.
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Identity should be at least one byte and at most 255 bytes long. Identities
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starting with binary zero are reserved for use by 0MQ infrastructure.
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If two peers use the same identity when connecting to a third peer, the
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results shall be undefined.
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[horizontal]
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Option value type:: binary data
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Option value unit:: N/A
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Default value:: NULL
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Applicable socket types:: all
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ZMQ_RATE: Set multicast data rate
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_RATE' option shall set the maximum send or receive data rate for
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multicast transports such as linkzmq:zmq_pgm[7] using the specified 'socket'.
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[horizontal]
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Option value type:: int
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Option value unit:: kilobits per second
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Default value:: 100
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Applicable socket types:: all, when using multicast transports
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ZMQ_RECOVERY_IVL: Set multicast recovery interval
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_RECOVERY_IVL' option shall set the recovery interval for multicast
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transports using the specified 'socket'. The recovery interval determines the
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maximum time in milliseconds that a receiver can be absent from a multicast
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group before unrecoverable data loss will occur.
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CAUTION: Exercise care when setting large recovery intervals as the data
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needed for recovery will be held in memory. For example, a 1 minute recovery
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interval at a data rate of 1Gbps requires a 7GB in-memory buffer.
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[horizontal]
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Option value type:: int
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Option value unit:: milliseconds
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Default value:: 10000
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Applicable socket types:: all, when using multicast transports
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ZMQ_SNDBUF: Set kernel transmit buffer size
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_SNDBUF' option shall set the underlying kernel transmit buffer size
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for the 'socket' to the specified size in bytes. A value of zero means leave
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the OS default unchanged. For details please refer to your operating system
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documentation for the 'SO_SNDBUF' socket option.
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[horizontal]
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Option value type:: int
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Option value unit:: bytes
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Default value:: 0
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Applicable socket types:: all
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ZMQ_RCVBUF: Set kernel receive buffer size
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_RCVBUF' option shall set the underlying kernel receive buffer size for
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the 'socket' to the specified size in bytes. A value of zero means leave the
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OS default unchanged. For details refer to your operating system documentation
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for the 'SO_RCVBUF' socket option.
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[horizontal]
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Option value type:: int
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Option value unit:: bytes
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Default value:: 0
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Applicable socket types:: all
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ZMQ_LINGER: Set linger period for socket shutdown
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_LINGER' option shall set the linger period for the specified 'socket'.
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The linger period determines how long pending messages which have yet to be
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sent to a peer shall linger in memory after a socket is closed with
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linkzmq:zmq_close[3], and further affects the termination of the socket's
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context with linkzmq:zmq_term[3]. The following outlines the different
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behaviours:
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* The default value of '-1' specifies an infinite linger period. Pending
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messages shall not be discarded after a call to _zmq_close()_; attempting to
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terminate the socket's context with _zmq_term()_ shall block until all
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pending messages have been sent to a peer.
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* The value of '0' specifies no linger period. Pending messages shall be
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discarded immediately when the socket is closed with _zmq_close()_.
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* Positive values specify an upper bound for the linger period in milliseconds.
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Pending messages shall not be discarded after a call to _zmq_close()_;
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attempting to terminate the socket's context with _zmq_term()_ shall block
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until either all pending messages have been sent to a peer, or the linger
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period expires, after which any pending messages shall be discarded.
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[horizontal]
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Option value type:: int
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Option value unit:: milliseconds
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Default value:: -1 (infinite)
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Applicable socket types:: all
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ZMQ_RECONNECT_IVL: Set reconnection interval
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_RECONNECT_IVL' option shall set the initial reconnection interval for
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the specified 'socket'. The reconnection interval is the period 0MQ
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shall wait between attempts to reconnect disconnected peers when using
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connection-oriented transports. The value -1 means no reconnection.
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NOTE: The reconnection interval may be randomized by 0MQ to prevent
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reconnection storms in topologies with a large number of peers per socket.
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[horizontal]
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Option value type:: int
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Option value unit:: milliseconds
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Default value:: 100
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Applicable socket types:: all, only for connection-oriented transports
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ZMQ_RECONNECT_IVL_MAX: Set maximum reconnection interval
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_RECONNECT_IVL_MAX' option shall set the maximum reconnection interval
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for the specified 'socket'. This is the maximum period 0MQ shall wait between
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attempts to reconnect. On each reconnect attempt, the previous interval shall be
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doubled untill ZMQ_RECONNECT_IVL_MAX is reached. This allows for exponential
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backoff strategy. Default value means no exponential backoff is performed and
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reconnect interval calculations are only based on ZMQ_RECONNECT_IVL.
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NOTE: Values less than ZMQ_RECONNECT_IVL will be ignored.
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[horizontal]
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Option value type:: int
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Option value unit:: milliseconds
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Default value:: 0 (only use ZMQ_RECONNECT_IVL)
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Applicable socket types:: all, only for connection-oriented transports
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ZMQ_BACKLOG: Set maximum length of the queue of outstanding connections
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The 'ZMQ_BACKLOG' option shall set the maximum length of the queue of
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outstanding peer connections for the specified 'socket'; this only applies to
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connection-oriented transports. For details refer to your operating system
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documentation for the 'listen' function.
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[horizontal]
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Option value type:: int
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Option value unit:: connections
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Default value:: 100
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Applicable socket types:: all, only for connection-oriented transports.
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ZMQ_MAXMSGSIZE: Maximum acceptable inbound message size
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Limits the size of the inbound message. If a peer sends a message larger than
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ZMQ_MAXMSGSIZE it is disconnected. Value of -1 means 'no limit'.
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[horizontal]
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Option value type:: int64_t
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Option value unit:: bytes
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Default value:: -1
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Applicable socket types:: all
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ZMQ_MULTICAST_HOPS: Maximum network hops for multicast packets
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Sets the time-to-live field in every multicast packet sent from this socket.
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The default is 1 which means that the multicast packets don't leave the local
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network.
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[horizontal]
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Option value type:: int
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Option value unit:: network hops
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Default value:: 1
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Applicable socket types:: all, when using multicast transports
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ZMQ_RCVTIMEO: Maximum time before a recv operation returns with EAGAIN
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Sets the timeout for receive operation on the socket. If the value is `0`,
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_zmq_recv(3)_ will return immediately, with a EAGAIN error if there is no
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message to receive. If the value is `-1`, it will block until a message is
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available. For all other values, it will wait for a message for that amount
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of time before returning with an EAGAIN error.
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[horizontal]
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Option value type:: int
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Option value unit:: milliseconds
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Default value:: -1 (infinite)
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Applicable socket types:: all
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ZMQ_SNDTIMEO: Maximum time before a send operation returns with EAGAIN
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Sets the timeout for send operation on the socket. If the value is `0`,
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_zmq_send(3)_ will return immediately, with a EAGAIN error if the message
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cannot be sent. If the value is `-1`, it will block until the message is sent.
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For all other values, it will try to send the message for that amount of time
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before returning with an EAGAIN error.
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[horizontal]
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Option value type:: int
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Option value unit:: milliseconds
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Default value:: -1 (infinite)
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Applicable socket types:: all
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ZMQ_IPV6: Enable IPv6 on socket
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Set the IPv6 option for the socket. A value of `1` means IPv6 is
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enabled on the socket, while `0` means the socket will use only IPv4.
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When IPv6 is enabled the socket will connect to, or accept connections
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from, both IPv4 and IPv6 hosts.
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[horizontal]
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Option value type:: int
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Option value unit:: boolean
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Default value:: 0 (false)
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Applicable socket types:: all, when using TCP transports.
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ZMQ_IPV4ONLY: Use IPv4-only on socket
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Set the IPv4-only option for the socket. This option is deprecated.
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Please use the ZMQ_IPV6 option.
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[horizontal]
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Option value type:: int
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Option value unit:: boolean
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Default value:: 1 (true)
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Applicable socket types:: all, when using TCP transports.
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ZMQ_IMMEDIATE: Queue messages only to completed connections
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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By default queues will fill on outgoing connections even if the connection has
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not completed. This can lead to "lost" messages on sockets with round-robin
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routing (REQ, PUSH, DEALER). If this option is set to `1`, messages shall be
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queued only to completed connections. This will cause the socket to block if
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there are no other connections, but will prevent queues from filling on pipes
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awaiting connection.
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[horizontal]
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Option value type:: int
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Option value unit:: boolean
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Default value:: 0 (false)
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Applicable socket types:: all, only for connection-oriented transports.
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ZMQ_ROUTER_MANDATORY: accept only routable messages on ROUTER sockets
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Sets the ROUTER socket behavior when an unroutable message is encountered. A
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value of `0` is the default and discards the message silently when it cannot be
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routed. A value of `1` returns an 'EHOSTUNREACH' error code if the message
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cannot be routed.
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[horizontal]
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Option value type:: int
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Option value unit:: 0, 1
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Default value:: 0
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Applicable socket types:: ZMQ_ROUTER
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ZMQ_ROUTER_RAW: switch ROUTER socket to raw mode
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Sets the raw mode on the ROUTER, when set to 1. When the ROUTER socket is in
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raw mode, and when using the tcp:// transport, it will read and write TCP data
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without 0MQ framing. This lets 0MQ applications talk to non-0MQ applications.
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When using raw mode, you cannot set explicit identities, and the ZMQ_MSGMORE
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flag is ignored when sending data messages. In raw mode you can close a specific
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connection by sending it a zero-length message (following the identity frame).
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NOTE: This option is deprecated, please use ZMQ_STREAM sockets instead.
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[horizontal]
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Option value type:: int
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Option value unit:: 0, 1
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Default value:: 0
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Applicable socket types:: ZMQ_ROUTER
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ZMQ_PROBE_ROUTER: bootstrap connections to ROUTER sockets
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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When set to 1, the socket will automatically send an empty message when a
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new connection is made or accepted. You may set this on REQ, DEALER, or
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ROUTER sockets connected to a ROUTER socket. The application must filter
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such empty messages. The ZMQ_PROBE_ROUTER option in effect provides the
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ROUTER application with an event signaling the arrival of a new peer.
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NOTE: do not set this option on a socket that talks to any other socket
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types: the results are undefined.
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[horizontal]
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Option value type:: int
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Option value unit:: 0, 1
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Default value:: 0
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Applicable socket types:: ZMQ_ROUTER, ZMQ_DEALER, ZMQ_REQ
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ZMQ_XPUB_VERBOSE: provide all subscription messages on XPUB sockets
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Sets the 'XPUB' socket behavior on new subscriptions and unsubscriptions.
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A value of '0' is the default and passes only new subscription messages to
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upstream. A value of '1' passes all subscription messages upstream.
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[horizontal]
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Option value type:: int
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Option value unit:: 0, 1
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Default value:: 0
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Applicable socket types:: ZMQ_XPUB
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ZMQ_TCP_KEEPALIVE: Override SO_KEEPALIVE socket option
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Override 'SO_KEEPALIVE' socket option (where supported by OS).
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The default value of `-1` means to skip any overrides and leave it to OS default.
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[horizontal]
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Option value type:: int
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Option value unit:: -1,0,1
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Default value:: -1 (leave to OS default)
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Applicable socket types:: all, when using TCP transports.
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ZMQ_TCP_KEEPALIVE_IDLE: Override TCP_KEEPCNT (or TCP_KEEPALIVE on some OS)
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Override 'TCP_KEEPCNT'(or 'TCP_KEEPALIVE' on some OS) socket option (where
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supported by OS). The default value of `-1` means to skip any overrides and
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leave it to OS default.
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[horizontal]
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Option value type:: int
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Option value unit:: -1,>0
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Default value:: -1 (leave to OS default)
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Applicable socket types:: all, when using TCP transports.
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ZMQ_TCP_KEEPALIVE_CNT: Override TCP_KEEPCNT socket option
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Override 'TCP_KEEPCNT' socket option (where supported by OS). The default
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value of `-1` means to skip any overrides and leave it to OS default.
|
|
|
|
[horizontal]
|
|
Option value type:: int
|
|
Option value unit:: -1,>0
|
|
Default value:: -1 (leave to OS default)
|
|
Applicable socket types:: all, when using TCP transports.
|
|
|
|
|
|
ZMQ_TCP_KEEPALIVE_INTVL: Override TCP_KEEPINTVL socket option
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Override 'TCP_KEEPINTVL' socket option(where supported by OS). The default
|
|
value of `-1` means to skip any overrides and leave it to OS default.
|
|
|
|
[horizontal]
|
|
Option value type:: int
|
|
Option value unit:: -1,>0
|
|
Default value:: -1 (leave to OS default)
|
|
Applicable socket types:: all, when using TCP transports.
|
|
|
|
|
|
ZMQ_TCP_ACCEPT_FILTER: Assign filters to allow new TCP connections
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Assign an arbitrary number of filters that will be applied for each new TCP
|
|
transport connection on a listening socket. If no filters are applied, then
|
|
the TCP transport allows connections from any IP address. If at least one
|
|
filter is applied then new connection source ip should be matched. To clear
|
|
all filters call zmq_setsockopt(socket, ZMQ_TCP_ACCEPT_FILTER, NULL, 0).
|
|
Filter is a null-terminated string with ipv6 or ipv4 CIDR.
|
|
|
|
[horizontal]
|
|
Option value type:: binary data
|
|
Option value unit:: N/A
|
|
Default value:: no filters (allow from all)
|
|
Applicable socket types:: all listening sockets, when using TCP transports.
|
|
|
|
|
|
ZMQ_PLAIN_SERVER: Set PLAIN server role
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Defines whether the socket will act as server for PLAIN security, see
|
|
linkzmq:zmq_plain[7]. A value of '1' means the socket will act as
|
|
PLAIN server. A value of '0' means the socket will not act as PLAIN
|
|
server, and its security role then depends on other option settings.
|
|
Setting this to '0' shall reset the socket security to NULL.
|
|
|
|
[horizontal]
|
|
Option value type:: int
|
|
Option value unit:: 0, 1
|
|
Default value:: 0
|
|
Applicable socket types:: all, when using TCP transport
|
|
|
|
|
|
ZMQ_PLAIN_USERNAME: Set PLAIN security username
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Sets the username for outgoing connections over TCP or IPC. If you set this
|
|
to a non-null value, the security mechanism used for connections shall be
|
|
PLAIN, see linkzmq:zmq_plain[7]. If you set this to a null value, the security
|
|
mechanism used for connections shall be NULL, see linkzmq:zmq_null[3].
|
|
|
|
[horizontal]
|
|
Option value type:: character string
|
|
Option value unit:: N/A
|
|
Default value:: not set
|
|
Applicable socket types:: all, when using TCP transport
|
|
|
|
|
|
ZMQ_PLAIN_PASSWORD: Set PLAIN security password
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Sets the password for outgoing connections over TCP or IPC. If you set this
|
|
to a non-null value, the security mechanism used for connections shall be
|
|
PLAIN, see linkzmq:zmq_plain[7]. If you set this to a null value, the security
|
|
mechanism used for connections shall be NULL, see linkzmq:zmq_null[3].
|
|
|
|
[horizontal]
|
|
Option value type:: character string
|
|
Option value unit:: N/A
|
|
Default value:: not set
|
|
Applicable socket types:: all, when using TCP transport
|
|
|
|
|
|
ZMQ_CURVE_SERVER: Set CURVE server role
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Defines whether the socket will act as server for CURVE security, see
|
|
linkzmq:zmq_curve[7]. A value of '1' means the socket will act as
|
|
CURVE server. A value of '0' means the socket will not act as CURVE
|
|
server, and its security role then depends on other option settings.
|
|
Setting this to '0' shall reset the socket security to NULL. When you
|
|
set this you must also set the ZMQ_CURVE_PUBLICKEY option.
|
|
|
|
[horizontal]
|
|
Option value type:: int
|
|
Option value unit:: 0, 1
|
|
Default value:: 0
|
|
Applicable socket types:: all, when using TCP transport
|
|
|
|
|
|
ZMQ_CURVE_PUBLICKEY: Set CURVE public key
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Sets the socket's long term public key. You must set this on a CURVE
|
|
client or server socket, see linkzmq:zmq_curve[7]. You can provide the
|
|
key as 32 binary bytes, or as a 40-character string encoded in the Z85
|
|
encoding format. For servers, the public key must be persisted and
|
|
shared through some unspecified but secure mechanism to clients. The
|
|
public key must always be used with the matching secret key generated
|
|
at the same time. To generate a public/secret key pair, use the
|
|
tools/curve_keygen tool.
|
|
|
|
[horizontal]
|
|
Option value type:: binary data or Z85 text string
|
|
Option value size:: 32 or 40
|
|
Default value:: NULL
|
|
Applicable socket types:: all, when using TCP transport
|
|
|
|
|
|
ZMQ_CURVE_SECRETKEY: Set CURVE secret key
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Sets the socket's long term secret key. You must set this on a CURVE
|
|
client socket, see linkzmq:zmq_curve[7]. You can provide the key as
|
|
32 binary bytes, or as a 40-character string encoded in the Z85 encoding
|
|
format.
|
|
|
|
[horizontal]
|
|
Option value type:: binary data or Z85 text string
|
|
Option value size:: 32 or 40
|
|
Default value:: NULL
|
|
Applicable socket types:: all, when using TCP transport
|
|
|
|
|
|
ZMQ_CURVE_SERVERKEY: Set CURVE server key
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Sets the socket's long term server key. You must set this on a CURVE
|
|
client socket, see linkzmq:zmq_curve[7]. You can provide the key as
|
|
32 binary bytes, or as a 40-character string encoded in the Z85 encoding
|
|
format. This key must be the same as the public key set on the server
|
|
socket.
|
|
|
|
[horizontal]
|
|
Option value type:: binary data or Z85 text string
|
|
Option value size:: 32 or 40
|
|
Default value:: NULL
|
|
Applicable socket types:: all, when using TCP transport
|
|
|
|
|
|
RETURN VALUE
|
|
------------
|
|
The _zmq_setsockopt()_ function shall return zero if successful. Otherwise it
|
|
shall return `-1` and set 'errno' to one of the values defined below.
|
|
|
|
ERRORS
|
|
------
|
|
*EINVAL*::
|
|
The requested option _option_name_ is unknown, or the requested _option_len_ or
|
|
_option_value_ is invalid.
|
|
*ETERM*::
|
|
The 0MQ 'context' associated with the specified 'socket' was terminated.
|
|
*ENOTSOCK*::
|
|
The provided 'socket' was invalid.
|
|
*EINTR*::
|
|
The operation was interrupted by delivery of a signal.
|
|
|
|
|
|
EXAMPLE
|
|
-------
|
|
.Subscribing to messages on a 'ZMQ_SUB' socket
|
|
----
|
|
/* Subscribe to all messages */
|
|
rc = zmq_setsockopt (socket, ZMQ_SUBSCRIBE, "", 0);
|
|
assert (rc == 0);
|
|
/* Subscribe to messages prefixed with "ANIMALS.CATS" */
|
|
rc = zmq_setsockopt (socket, ZMQ_SUBSCRIBE, "ANIMALS.CATS", 12);
|
|
----
|
|
|
|
.Setting I/O thread affinity
|
|
----
|
|
int64_t affinity;
|
|
/* Incoming connections on TCP port 5555 shall be handled by I/O thread 1 */
|
|
affinity = 1;
|
|
rc = zmq_setsockopt (socket, ZMQ_AFFINITY, &affinity, sizeof (affinity));
|
|
assert (rc);
|
|
rc = zmq_bind (socket, "tcp://lo:5555");
|
|
assert (rc);
|
|
/* Incoming connections on TCP port 5556 shall be handled by I/O thread 2 */
|
|
affinity = 2;
|
|
rc = zmq_setsockopt (socket, ZMQ_AFFINITY, &affinity, sizeof (affinity));
|
|
assert (rc);
|
|
rc = zmq_bind (socket, "tcp://lo:5556");
|
|
assert (rc);
|
|
----
|
|
|
|
|
|
SEE ALSO
|
|
--------
|
|
linkzmq:zmq_getsockopt[3]
|
|
linkzmq:zmq_socket[3]
|
|
linkzmq:zmq_plain[7]
|
|
linkzmq:zmq_curve[7]
|
|
linkzmq:zmq[7]
|
|
|
|
|
|
AUTHORS
|
|
-------
|
|
This page was written by the 0MQ community. To make a change please
|
|
read the 0MQ Contribution Policy at <http://www.zeromq.org/docs:contributing>.
|