keep-alive

I have heard of HTTP keep-alive but for now I want to open a socket connection with a remote server. Now will this socket connection remain open forever or is there a timeout limit associated with it similar to HTTP keep-alive? TCP sockets remain open till they are closed. That said, it's very difficult to detect a broken connection (broken, as in a router died, etc, as opposed to closed) without actually sending data, so most applications do some sort of ping/pong reaction every so often just to make sure the connection is still actually alive. Now will this socket connection remain open

最近在使用VSCODE 开发VUE项目，以下是如何生成VUE文件模板的做法。 打开vscode, 文件-首选项-用户代码片段，选择代码片段文件或创建代码片段，选择或新建vue.json 在代码片段内输入如下内容， 其中 ${1:功能描述} 是光标第一个焦点的位置 $CURRENT_YEAR 等显示日期信息 双引号需要斜杠转义 { // Place your snippets for vue here. Each snippet is defined under a snippet name and has a prefix, body and // description. The prefix is what is used to trigger the snippet and the body will be expanded and inserted. Possible variables are: // $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders. Placeholders with the // same ids are connected. // Example: // "Print to console": {