SYNOPSIS
#include <nng/nng.h>
int nng_dialer_create(nng_dialer *dialerp, nng_socket s, const char *url);DESCRIPTION
The nng_dialer_create() function creates a newly initialized
dialer, associated with socket s, and configured to connect to the
address specified by url, and stores a pointer to at the location
referenced by dialerp.
Dialers initiate a remote connection to a listener. Upon a successful connection being established, they create a pipe, add it to the socket, and then wait for that pipe to be closed. When the pipe is closed, they will re-initiate the connection. Dialer’s will also periodically retry a connection automatically if an attempt to connect asynchronously fails.
| While it is convenient to think of dialers as "clients", the relationship between the listener or dialer is orthogonal to any server or client status that might be associated with a given protocol. For example, a REQ socket might have associated dialers, but might also have associated listeners. It may even have some of each at the same time! |
The dialer is not started, but may be further configured with the nng_dialer_setopt(3) family of functions.
Once it is fully configured, the dialer may be started using the nng_dialer_start(3) function.
| If no specific configuration is required, consider using the simpler nng_dial(3) function instead. |
RETURN VALUES
This function returns 0 on success, and non-zero otherwise.
ERRORS
NNG_EADDRINVAL-
An invalid url was specified.
NNG_ECLOSED-
The socket s is not open.
NNG_ENOMEM-
Insufficient memory is available.