SYNOPSIS
#include <nanomsg/nn.h>
int nn_socket(int af, int proto);DESCRIPTION
The nn_socket() function creates socket using the address family af and
protocol proto and returns it.
| This function is provided for API compatibility with legacy libnanomsg. Consider using the relevant modern API instead. |
| Mixing the compatibility API and the modern API is not supported on a given socket. |
| Some protocols, transports, and features are only available in the modern API. |
The address family af can be one of two values:
AF_SP
|
Normal socket. |
AF_SP_RAW
|
“Raw mode” socket. |
The protocol indicates the protocol to be used when creating the socket. The following protocols are defined:
NN_PAIR
|
Pair protocol. |
NN_PUB
|
Publisher protocol. |
NN_SUB
|
Subscriber protocol. |
NN_REQ
|
Requestor protocol. |
NN_REP
|
Replier protocol. |
NN_PUSH
|
Push protocol. |
NN_PULL
|
Pull protocol. |
NN_SURVEYOR
|
Surveyor protocol. |
NN_RESPONDENT
|
Respondent protocol. |
NN_BUS
|
Bus protocol. |
RETURN VALUES
This function returns a valid socket number on success, and -1 on failure.
ERRORS
ENOMEM
|
Insufficient memory is available. |
ENOTSUP
|
The protocol is not supported. |
ETERM
|
The library is shutting down. |