SSL_get0_next_proto_negotiated
SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
#define SSL_get0_npn_negotiated SSL_get0_next_proto_negotiated
SSL_get0_next_proto_negotiated(client.ssl, &proto, &proto_len);
SSL_get0_next_proto_negotiated(server.ssl, &proto, &proto_len);
SSL_get0_next_proto_negotiated(client, &client_s, &client_len);
SSL_get0_next_proto_negotiated(server, &server_s, &server_len);
SSL_get0_next_proto_negotiated(serverssl, &prot, &protlen);