Section: nanomsg 1.1.5 (7)
nn_survey - survey scalability protocol
Allows to broadcast a survey to multiple locations and gather the responses.
Used to send the survey. The survey is delivered to all the connected
respondents. Once the query is sent, the socket can be used to receive
the responses. When the survey deadline expires, receive will return
Use to respond to the survey. Survey is received using receive function,
response is sent using send function. This socket can be connected to
at most one peer.
Specifies how long to wait for responses to the survey. Once the deadline
expires, receive function will return ETIMEDOUT error and all subsequent
responses to the survey will be silently dropped. The deadline is measured
in milliseconds. Option type is int. Default value is 1000 (1 second).