setClientErrorHandler() — vite Function Reference

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

Function typescript ViteCore ConfigEngine called by 2

Entity Profile

ViteCore→ ConfigEngine→ setClientErrorHandler() — vite Function Reference

Dependency Diagram

graph TD
  0c12d8fd_e65d_655d_6d45_310c047bb1ce["setClientErrorHandler()"]
  695bc011_d16d_4322_2fef_1a59a092ee32["http.ts"]
  0c12d8fd_e65d_655d_6d45_310c047bb1ce -->|defined in| 695bc011_d16d_4322_2fef_1a59a092ee32
  5c50110b_5c76_c14f_b1dd_3efd3df7f375["preview()"]
  5c50110b_5c76_c14f_b1dd_3efd3df7f375 -->|calls| 0c12d8fd_e65d_655d_6d45_310c047bb1ce
  24ecf2a1_3c09_d451_76f3_9485b4e993f8["_createServer()"]
  24ecf2a1_3c09_d451_76f3_9485b4e993f8 -->|calls| 0c12d8fd_e65d_655d_6d45_310c047bb1ce
  style 0c12d8fd_e65d_655d_6d45_310c047bb1ce fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/vite/src/node/http.ts lines 254–274

export function setClientErrorHandler(
  server: HttpServer,
  logger: Logger,
): void {
  server.on('clientError', (err, socket) => {
    let msg = '400 Bad Request'
    if ((err as any).code === 'HPE_HEADER_OVERFLOW') {
      msg = '431 Request Header Fields Too Large'
      logger.warn(
        colors.yellow(
          'Server responded with status code 431. ' +
            'See https://vite.dev/guide/troubleshooting.html#_431-request-header-fields-too-large.',
        ),
      )
    }
    if ((err as any).code === 'ECONNRESET' || !socket.writable) {
      return
    }
    socket.end(`HTTP/1.1 ${msg}\r\n\r\n`)
  })
}