ngx_http_ssl_alpn_select 24 src/http/modules/ngx_http_ssl_module.c static int ngx_http_ssl_alpn_select(ngx_ssl_conn_t *ssl_conn, ngx_http_ssl_alpn_select 650 src/http/modules/ngx_http_ssl_module.c SSL_CTX_set_alpn_select_cb(conf->ssl.ctx, ngx_http_ssl_alpn_select, NULL);