## nng_aio_set_msg Set message for asynchronous send. ### Synopsis ```c #include void nng_aio_set_msg(nng_aio *aio, nng_msg *msg); ``` ### Description The `nng_aio_set_msg` function sets the message that will be used for an asynchronous send operation (see xref:../sock/nng_send_aio.adoc[`nng_send_aio`]). ### See Also xref:nng_aio_get_msg.adoc[nng_aio_get_msg], xref:../sock/nng_send_aio.adoc[nng_send_aio], xref:nng_msg.adoc[nng_msg]