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Status](https://travis-ci.org/wangkechun/vv.svg?branch=master)](https://travis-ci.org/wangkechun/vv)\n[![Go Report Card](https://goreportcard.com/badge/github.com/wangkechun/vv)](https://goreportcard.com/report/github.com/wangkechun/vv)\n\n# 视频展示\n- ![单文件编辑](https://qs.hi-hi.cn/wangkechun/vv/doc/single.gif)\n- [大文件增量传输-点击查看](https://qs.hi-hi.cn/wangkechun/vv/doc/bigfile.gif)\n- [fuse编辑远程目录-点击查看](https://qs.hi-hi.cn/wangkechun/vv/doc/dir.gif)\n\n\n## 项目简介：\n\n该项目旨在为经常在服务器、虚拟机、docker容器中修改代码或者配置文件的小伙伴提供本地coding新体验。\n\n你是否一直为修改服务器代码而困扰？无代码高亮，少之又少的快捷方式，一个不注意又写了一个莫名其妙的bug。\n\n我不是资深的vim使用者，我只是一个追求完美和效率的偷懒者。\n\nvv编辑器的想法就是我在偷懒的时候萌生的。\n\nvv+ ‘filename’，你盯着的那个文件已经在你最喜欢的编辑器中打开\n\n'command + s', 服务器已如你期望自动更新完毕\n\n这种开发方式，相信你再也不会拒绝。\n\n## 主要用到的开源库\n\n- google.golang.org/grpc grpc、protobuf\n- github.com/kr/binarydist  bsdiff 的 go 语言实现\n- github.com/spf13/cobra CLI 界面\n- github.com/hanwen/go-fuse/fuse go-fuse\n\n## 技术实现\n\n### 目录挂载实现\n\n### 增量传输实现\n\n### p2p 数据传输实现\n\n测试过 https://github.com/vzex/dog-tunnel 这种 udp 打洞的方式，不过实测下来稳定性不够，某些网络不能成功连接。\n\n于是改为尝试 frp 这种中间服务器中转的模式。\n\nA -\u003e 中转服务器\n\nB -\u003e 中转服务器\n\n中转服务器 pipe 配对的 tcp， A -\u003e B 成功建立连接。\n这里存在一个问题是 A、B 和中转服务器的的时间间隔可能很长，等到成功配对的时候可能有 tcp 已经断掉了，建立的连接是坏的。\n并且中转服务器不能私自往 tcp 里面写数据，所以没法提前检测连接是否断掉了。\n\n最后改成 A -\u003e 中转服务器 建立长连接， 然后中转服务器如果收到 B 的连接，就告诉 A 需要新起一个连接， 然后把 A 新起的连接和 B 的连接配置。\n由于两个连接都是刚刚建立的，不会有超时问题。\n\n这种方式的话问题是会慢点，因为要通知 A 去建立一个新连接， 解决方案很简单，A 需要新起连接的时候多发起一个，之后的连接就可以复用了。 如果多余的连接长时间等不到配对会主动断开。\n\nA 和 B 配对成功了就可以随意通信了， 然后直接使用 grpc， 可以很方便的双向通信。\n\ngrpc 正常使用是需要一些hack的，正常是一个 server 负责 listen，一个 client 负责 dial。 这里实际上两边都是 dial， 需要自定义一个 listen， 如果成功建立一条到 B 的连接，则 Accept 一个连接给 grpc。 \n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fwangkechun%2Fvv","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fwangkechun%2Fvv","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fwangkechun%2Fvv/lists"}