single_connection  849 core/ngx_connection.c     if (c->single_connection) {
single_connection  148 core/ngx_connection.h     unsigned            single_connection:1;
single_connection  485 http/ngx_http_request.c     c->single_connection = 1;
single_connection 1068 http/ngx_http_upstream.c     r->connection->single_connection = 0;