table of contents
| NNG_SOCKET_ID(3) | NNG Reference Manual | NNG_SOCKET_ID(3) |
NAME¶
nng_socket_id - return numeric socket identifier
SYNOPSIS¶
#include <nng/nng.h> int nng_socket_id(nng_socket s);
DESCRIPTION¶
The nng_socket_id() function returns a positive identifier for the socket s, if it is valid. Otherwise it returns -1.
Note
A socket is considered valid if it was ever opened with a protocol
constructor, such as the nng_req0_open() function.
Sockets that are allocated on the stack or statically should be initialized
with the macro NNG_SOCKET_INITIALIZER to ensure that
they cannot be confused with a valid socket before they are opened.
RETURN VALUES¶
This function returns the positive value for the socket identifier, or -1 if the socket is invalid.
ERRORS¶
None.
SEE ALSO¶
nng_socket(5), nng(7)
| 2024-05-31 |