nng_duration - relative time in milliseconds

An nng_duration is a relative time, measured in milliseconds. This type is most often used in conjunction with timers and timeouts. A couple of special values have been set aside, and carry special meanings. NNG_DURATION_DEFAULT Indicates a context-specific default value should be used. NNG_DURATION_INFINITE Effectively an infinite duration; used most often to disable timeouts. NNG_DURATION_ZERO Zero length duration; used to perform a single polling operation.

nng_duration - relative time in milliseconds

nng_options(5), nng(7) 2025-04-20 NNG_DURATION(5)

#include <nng/nng.h> typedef int32_t nng_duration; #define NNG_DURATION_INFINITE (-1) #define NNG_DURATION_DEFAULT (-2) #define NNG_DURATION_ZERO (0)