--- title: "STM Lesson 93. LAN. W5500. HTTP Server. Sockets. Part 2" url: "https://maker.wiznet.io/teddy/projects/stm-lesson-93-lan-w5500-http-server-sockets-part-2/" markdown_url: "https://maker.wiznet.io/teddy/projects/stm-lesson-93-lan-w5500-http-server-sockets-part-2/md" type: "UCC: User Created Content" author: "Narod stream" author_url: "https://narodstream.ru/stm-urok-93-lan-w5500-http-server-sokety-chast-2/" editor: "WIZnet" editor_url: "https://maker.wiznet.io/" original_author: "Narod stream" original_url: "https://narodstream.ru/stm-urok-93-lan-w5500-http-server-sokety-chast-2/" published: "2023-08-02" language: "en" likes: 0 views: 224 comments: 0 source: "WIZnet Makers (https://maker.wiznet.io/)" --- # STM Lesson 93. LAN. W5500. HTTP Server. Sockets. Part 2 > STM Lesson 93. LAN. W5500. HTTP Server. Sockets. Part 2 Original author: Narod stream (source: https://narodstream.ru/stm-urok-93-lan-w5500-http-server-sokety-chast-2/) ## Article ## **LAN. W5500. HTTP Server. Sockets** B [**previous part**](https://narodstream.ru/stm-urok-93-lan-w5500-http-server-sokety-chast-1/) lesson we got acquainted with the concept of sockets, and also made certain amendments to the code for working with them. In function **http_request** change the little output in the USART file name by adding the socket number there as well `strcpy(httpsockprop[sn].fname,tmpbuf);` `}` `**sprintf(str1,**``**"S%d %srn"**``**,sn, httpsockprop[sn].fname);**` `**HAL_UART_Transmit(&huart2,(uint8_t*)str1,strlen(str1),0x1000);**` `f_close(&httpsockprop[sn].MyFile);` Here we also display the socket number `sprintf(str1,``"**S%d **f_open: %drn"``,**sn,**result);` `HAL_UART_Transmit(&huart2,(uint8_t*)str1,strlen(str1),0x1000);` `sprintf(str1,``"**S%d **f_size: %lurn"``,**sn,**MyFile[sn].fsize);` `HAL_UART_Transmit(&huart2,(uint8_t*)str1,strlen(str1),0x1000);` And here `sprintf(str1,``"**S%d **data size:%lu; cnt data part:%u; last_data_part_size:%urn"``,**sn,**` `(``unsigned``long``)httpsockprop[sn].data_size, httpsockprop[sn].cnt_rem_data_part, httpsockprop[sn].last_data_part_size);` And here we confirm in the terminal program the closure of the socket in case of transmission of the one-buffer page. Display a little differently to make it different `DisconnectSocket(sn); ``//Разъединяемся` `SocketClosedWait(sn);` `**sprintf(str1,**``**"S%d (one) closedrn"**``**,sn);**` `**HAL_UART_Transmit(&huart2,(uint8_t*)str1,strlen(str1),0x1000);**` In function **tcp_send_http_one** in the body conditions in case of transmission of the page with an error, display this information with the socket number `else` `{` `** sprintf(str1,**``**"S%d file not foundrn"**``**,sn);**` `** HAL_UART_Transmit(&huart2,(uint8_t*)str1,strlen(str1),0x1000);**` `header_len = strlen(error_header);` We collect the code, send the controller and try to request some kind of document heavier. I also added a background to the page in the form of a repeating picture using the design style `****` We need to get this result in browsers ![Image03](https://narodstream.ru/wp-content/uploads/2017/09/Image03-1.png) We see that everything is displayed. And why in browsers, and because now we can request pages from our mini-server in any server, we are now not afraid that the browser will want to open several connections. Here is the result in the Google Crome browser ![Image05](https://narodstream.ru/wp-content/uploads/2017/09/Image05-1.png) Let's try to open such a file with several drawings `****` `**

STM32F103x8

WEB Server

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**` `****` Open it in the Google Chrome browser ![image08](https://narodstream.ru/wp-content/uploads/2017/09/image08-1.png) Let's see how sockets switch in the terminal program **Terminal out** We see that all 6 sockets participate in the work. Fine! So everything is right. Thanks to everyone for the attention! [Embedded media](https://www.youtube.com/embed/VDNifJyaKU4) --- Source: https://maker.wiznet.io/teddy/projects/stm-lesson-93-lan-w5500-http-server-sockets-part-2/