Describe the bug

If configured with proxy, such as

server.proxy: {
    '/api':         {target: 'http://localhost:3000/'},
}

Vite won't restart when the local server is restarted, especially when server restart takes more than a few seconds (during development), throwing an error:

19:25:21 [vite] http proxy error:
Error: connect ECONNREFUSED 127.0.0.1:3000
    at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1157:16)

Reproduction

n/a

System Info

System:
    OS: macOS 12.2
    CPU: (8) x64 Apple M1
    Memory: 47.80 MB / 16.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 16.14.2 - /usr/local/opt/node@16/bin/node
    Yarn: 1.22.18 - /usr/local/bin/yarn
    npm: 8.5.0 - /usr/local/opt/node@16/bin/npm
  Browsers:
    Chrome: 101.0.4951.54
    Safari: 15.3
  npmPackages:
    @vitejs/plugin-react: ^1.1.4 => 1.2.0 
    @vitejs/plugin-react-refresh: ^1.3.6 => 1.3.6 
    vite: ^2.7.12 => 2.8.6

Used Package Manager

npm

Logs

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a Vite issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to https://github.com/vuejs/core instead.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.