You will need to play with LWIP configuration options and increase the TCP connections it can handle at same time. Browsers fire about 8 connections at same time to load resources on the webpage
Mario ________________________________________ From: lwip-users <lwip-users-bounces+mrluzeiro=ua...@nongnu.org> on behalf of Андрей Виноградов <andrey.vinogra...@teplomonitor.ru> Sent: 20 July 2021 16:12 To: lwip-users@nongnu.org Subject: [lwip-users] Problem with loading web-pages Hello! I'm working on an embedded web-server. Web-browser (Chrome) can't get all needed files for opening a page. Some files he can obtain only after a second or third try. LwIP seems to be working fine, drivers too. It looks like LwIP doesn't see or ignore browser file requests, if there are "too many" of them at the same time. Browser screenshot: https://drive.google.com/file/d/10Hp9MEY5ajJj9Bx_m1SDxUy5nKHm7KPE/view?usp=sharing LwIP debug log: https://docs.google.com/document/d/1ThkPlngDfR2Z_FePcTF2aETJ3b9KEKel6IlYSOj_w18/edit?usp=sharing I don't know where to search for bottleneck. Which debug logs should I also enable and change LwIP options. Can you give me some clues on where to search for the bug? BTW, some suggestions on debug prints: tcp_debug_print_flags(): disable LWIP_DEBUGF(TCP_DEBUG, ("\n")) at the end, because debug log looks like this: TCP header: +-------------------------------+ | 7100 | 80 | (src port, dest port) +-------------------------------+ | 2064295908 | (seq no) +-------------------------------+ | 0000006957 | (ack no) +-------------------------------+ | 5 | |010000| 64240 | (hdrlen, flags (ACK <--- ), win) +-------------------------------+ | 0xc50c | 0 | (chksum, urgp) +-------------------------------+ and next add \n here #if TCP_INPUT_DEBUG LWIP_DEBUGF(TCP_INPUT_DEBUG, ("+-+-+-+-+-+-+-+-+-+-+-+-+-+- tcp_input: flags ")); tcp_debug_print_flags(TCPH_FLAGS(tcphdr)); LWIP_DEBUGF(TCP_INPUT_DEBUG, ("\n-+-+-+-+-+-+-+-+-+-+-+-+-+-+\n")); // <--- \n on both sides #endif /* TCP_INPUT_DEBUG */ http.c: LWIP_DEBUGF(HTTPD_DEBUG | LWIP_DBG_TRACE, ("Received GET request\"\n")); Extra quotation mark. Probably should be just LWIP_DEBUGF(HTTPD_DEBUG | LWIP_DBG_TRACE, ("Received GET request\n")); Thx! _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
