tryListen() — vite Function Reference

Architecture documentation for the tryListen() function in http.ts from the vite codebase.

Function typescript ViteCore ConfigEngine calls 1 called by 1

Entity Profile

ViteCore→ ConfigEngine→ tryListen() — vite Function Reference

Dependency Diagram

graph TD
  42db6b86_156c_c702_dc0d_98ceb7dfb6c1["tryListen()"]
  695bc011_d16d_4322_2fef_1a59a092ee32["http.ts"]
  42db6b86_156c_c702_dc0d_98ceb7dfb6c1 -->|defined in| 695bc011_d16d_4322_2fef_1a59a092ee32
  985bbb1d_5299_33eb_c131_28499ef4678b["isPortAvailable()"]
  985bbb1d_5299_33eb_c131_28499ef4678b -->|calls| 42db6b86_156c_c702_dc0d_98ceb7dfb6c1
  19009191_26ac_2526_d048_41ac02638e55["createServer()"]
  42db6b86_156c_c702_dc0d_98ceb7dfb6c1 -->|calls| 19009191_26ac_2526_d048_41ac02638e55
  style 42db6b86_156c_c702_dc0d_98ceb7dfb6c1 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/vite/src/node/http.ts lines 177–189

function tryListen(port: number, host: string): Promise<boolean> {
  return new Promise((resolve) => {
    const server = net.createServer()
    server.once('error', () => {
      // Ensure server is closed even on error to prevent resource leaks
      server.close(() => resolve(false))
    })
    server.once('listening', () => {
      server.close(() => resolve(true))
    })
    server.listen(port, host)
  })
}