#include <nng/nng.h>
int nng_ctx_recvmsg(nng_ctx ctx, nng_msg **msgp, int flags);nng_ctx_recvmsg(3)
NAME
nng_ctx_recvmsg - receive message using socket
SYNOPSIS
DESCRIPTION
The nng_ctx_recvmsg() receives a message on context ctx, storing the
received message at the location pointed to by msgp.
The flags may contain the following value:
NNG_FLAG_NONBLOCK-
The function returns immediately, even if no message is available. Without this flag, the function will wait until a message is receivable on the context ctx, or any configured timer expires.
| The semantics of what receiving a message means vary from protocol to protocol, so examination of the protocol documentation is encouraged. |
RETURN VALUES
This function returns 0 on success, and non-zero otherwise.
ERRORS
NNG_EAGAIN
|
The operation would block, but |
NNG_ECLOSED
|
The context or socket is not open. |
NNG_EINVAL
|
An invalid set of flags was specified. |
NNG_ENOMEM
|
Insufficient memory is available. |
NNG_ENOTSUP
|
The protocol does not support receiving. |
NNG_ESTATE
|
The context cannot receive data in this state. |
NNG_ETIMEDOUT
|
The operation timed out. |