#include <nng/nng.h>
int nng_dialer_create(nng_dialer *dialerp, nng_socket s, const char *url);The nng_dialer_create() function creates a newly initialized
nng_dialer object, 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. Dialers will also periodically retry a connection automatically if an attempt to connect asynchronously fails.
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Tip
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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() family of functions.
Once it is fully configured, the dialer may be started using the
nng_dialer_start() function.
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Tip
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If no specific configuration is required, consider using the
simpler nng_dial() function instead.
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NNG_EADDRINVAL
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An invalid url was specified. |
NNG_ECLOSED
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The socket s is not open. |
NNG_ENOMEM
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Insufficient memory is available. |