Hello, I cannot help you but I can give you an advice. What about to attach a tcpdump/wireshark log (not a screenshot)? And setup debug in LWIP?
Best Martin On Wed, Dec 12, 2012 at 3:12 PM, pv33 <p...@seznam.cz> wrote: > Hi, > > On lwip 1.4, FreeRTOS 7.1.1, we have written a web server. The main part is > > static void http_server_netconn_thread(void *arg) > { > struct netconn *conn, *newconn; > err_t err; > > /* Create a new TCP connection handle */ > conn = netconn_new(NETCONN_TCP); > > if (conn!= NULL) > { > /* Bind to port 80 (HTTP) with default IP address */ > err = netconn_bind(conn, NULL, 8002); > > if (err == ERR_OK) > { > /* Put the connection into LISTEN state */ > netconn_listen(conn); > > while(1) > { > /* accept any icoming connection */ > err = netconn_accept(conn, &newconn); > > if( err == ERR_OK ) > { > /* serve connection */ > http_server_serve(newconn); > > /* delete connection */ > netconn_delete(newconn); > } > } > } > else > { > printf("can not bind netconn"); > } > } > else > { > printf("can not create netconn"); > } > } > > Every 2 seconds our server receives a request for a CRC value and if the > value is changed > a following request for a BMP picture which comes with a minimal delay after > a CRC request. > . > We have found in Safari browser in Develop->Network logs: > http://www.freeimagehosting.net/9aumg > that there is a latency time for a reply on CRC request about 200 ms which > seems to be very long. > But if the server receives a second request, for a BMP file, in less than 10 > ms, the latency time of the second request is only > about 5 ms. > > Please, could anyone let us know how could we improve latency time of > requests of CRC values? > > Thanks for any help and suggestion, > > Pavel > . > > _______________________________________________ > lwip-users mailing list > lwip-users@nongnu.org > https://lists.nongnu.org/mailman/listinfo/lwip-users _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users