2SO_KEEPALIVE:使能 TCP keepalive 并且设置 keepalive 用于检查僵尸客户端 使能TCP keepalive 并且设置 keepalive 的参考代码可以参考这里,如下: AI检测代码解析 if (cfg->keep_alive_cfg && cfg->keep_alive_cfg->keep_alive_enable) { int keep_alive_enable = 1; int keep_alive_idle = cfg->keep_al...
此篇博客用来记录ESP32TCP/UDP相关应用层操作。首先列举出几个常用的 setsockopt option: SO_REUSEADDR 启用地址复用,允许 socket 绑定处于 TIME-WAIT 状态的相同端口的 IP 地址 SO_KEEPALIVE 启用 TCP 保活机制,用于服务器或客户端检测链接是否异常,默认值 IDLE:2 小时,INTVL:75 秒,CNT: 9 次 SO ...
keepalive option setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &keepAlive, sizeof(int)); setsockopt(sock, IPPROTO_TCP, TCP_KEEPIDLE, &keepIdle, sizeof(int)); setsockopt(sock, IPPROTO_TCP, TCP_KEEPINTVL, &keepInterval, sizeof(int)); setsockopt(sock, IPPROTO_TCP, TCP_KEEPCNT, &keepCount, ...
{"id":"8db3fac0.99dd48","type":"mqtt-broker","z":"","name":"","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":false,"keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","closeTopic":"","closeQos":"0"...
ThegmtOffset_secvariable defines the offset in seconds between your time zone and GMT. We live in Portugal, so the time offset is 0. Change the timegmtOffset_secvariable to match your time zone. constlonggmtOffset_sec=0; Daylight Offset ...
keepalive packets (ICMP request/replies) can be watched using tcpdump pings to the ESP32CAM are also answered in reasonable time (<100ms) the application works well for some time after reboot (layer 7) loss of (client-)connection does not affect the ESP32CAM'S AP functionality - any cli...
You could send out a 'ping' or keepalive packet out from one side every now and then, e.g. every second or so. If the other side doesn't see the 'ping' packets, shut down STA mode if needed (so you can change channels) and listen on each WiFi channel for a second or two, ...
Blynk has a bunch of integration tests that require DB, so you have to skip tests during build. mvn clean install -Dmaven.test.skip=true How Blynk Works? When hardware connects to Blynk cloud it opens either keep-alive ssl/tls connection on port 443 (9443 for local servers) or keep-...
此篇博客用来记录ESP32TCP/UDP相关应用层操作。首先列举出几个常用的 setsockopt option: SO_REUSEADDR 启用地址复用,允许 socket 绑定处于 TIME-WAIT 状态的相同端口的 IP 地址 SO_KEEPALIVE 启用 TCP 保活机制,用于服务器或客户端检测链接是否异常,默认值 IDLE:2 小时,INTVL:75 秒,CNT: 9 次 SO ...
// Set tcp keepalive option //对接受的连接进行设置 setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &keepAlive, sizeof(int)); setsockopt(sock, IPPROTO_TCP, TCP_KEEPIDLE, &keepIdle, sizeof(int)); setsockopt(sock, IPPROTO_TCP, TCP_KEEPINTVL, &keepInterval, sizeof(int)); ...