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nng_tls_config_ca_chain.3tls.adoc

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nng_tls_config_ca_chain(3tls)

NAME

nng_tls_config_ca_chain - configure certificate authority certificate chain

SYNOPSIS

#include <nng/nng.h>
#include <nng/supplemental/tls/tls.h>

int nng_tls_config_ca_chain(nng_tls_config *cfg, const char *chain, const char *crl);

DESCRIPTION

The nng_tls_config_ca_chain() function configures a certificate or certificate chain to be used when validating peers using the configuration cfg.

Note
Certificates must be configured when using the authentication mode NNG_TLS_AUTH_MODE_REQUIRED.
Tip
This function may be called multiple times, to add additional chains to a configuration, without affecting those added previously.

The certificates located in chain must be a zero-terminated C string in PEM format. Multiple certificates may appear concatenated together, with the leaf certificate listed first.

The crl may be NULL, or may also be a C string containing a PEM format certificate revocation list for the associated authority.

RETURN VALUES

This function returns 0 on success, and non-zero otherwise.

ERRORS

NNG_ENOMEM

Insufficient memory is available.

NNG_EBUSY

The configuration cfg is already in use, and cannot be modified.

NNG_EINVAL

An invalid chain or crl was supplied.