ZMQ::Socket::Req

Constants

ZMQ::Socket::Req

A socket of type ZMQ::Socket::Req is used by a client to send requests to and receive replies from a service. This socket type allows only an alternating sequence of ZMQ::Socket#send and subsequent ZMQ::Socket#recv calls. Each request sent is load-balanced among all services, and each reply received is matched with the last issued request.

When a ZMQ::Socket::Req socket enters an exceptional state due to having reached the high water mark for all services, or if there are no services at all, then any ZMQ::Socket#send operations on the socket shall block until the exceptional state ends or at least one service becomes available for sending; messages are not discarded.

Summary of ZMQ::Socket::Req characteristics

Compatible peer sockets: ZMQ::Socket::Rep
Direction: Bidirectional
Send/receive pattern: Send, Receive, Send, Receive, …
Outgoing routing strategy: Load-balanced
Incoming routing strategy: Last peer
ZMQ::Socket#hwm option action: Block

Public Instance Methods

send_frame(frame, flags = 0) click to toggle source

# File lib/zmq/socket/req.rb, line 32
def send_frame(frame, flags = 0)
  raise ZMQ::Error, "cannot send multiple frames on REQ sockets" if (flags & ZMQ::Frame::MORE) == ZMQ::Frame::MORE
  super
end

type() click to toggle source

# File lib/zmq/socket/req.rb, line 25
def type
  ZMQ::REQ
end

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ZMQ::Socket::Req

Constants

ZMQ::Socket::Req

Summary of ZMQ::Socket::Req characteristics

Public Instance Methods