gnutls_sign_algorithm_get_requested - API function
int gnutls_sign_algorithm_get_requested(gnutls_session_t session, size_t indx, gnutls_sign_algorithm_t * algo);
Returns the signature algorithm specified by index that was requested by the peer. If the specified index has no data available this function returns GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE. If the negotiated TLS version does not support signature algorithms then GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned even for the first index. The first index is 0.
This function is useful in the certificate callback functions to assist in selecting the correct certificate.
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise an error code is returned.
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