nn_connect(3compat)

NN_CONNECT(3compat)

NNG Reference Manual

NN_CONNECT(3compat)

NAME

nn_connect - connect to remote peer (compatible API)

SYNOPSIS

#include <nanomsg/nn.h>
int nn_connect(int sock, const char *url)

DESCRIPTION

The nn_connect() function arranges for the socket sock to initiate connection to a peer at the address specified by url. An identifier for this socket’s association with the url is returned to the caller on success. This identifier can be used with nn_shutdown() to remove the association later.

Note

This function is provided for API
compatibility with legacy libnanomsg. Consider using the relevant modern API instead.

Note

The connect operation is performed asynchronously, and may not have
completed before this function returns control to the caller.

Important

Only transports supported by legacy libnanomsg may be
used with this function. In particular, only the schemes tcp://, ipc://, inproc://, and ws:// are supported with this function. (Use the modern API to use other schemes.)

RETURN VALUES

This function returns a positive identifier success, and -1 on error.

ERRORS

ECONNREFUSED

The connection attempt was refused.

EBADF

The socket sock is not open.

EINVAL

An invalid url was supplied.