method OutgoingMessage.prototype.flushHeaders
Usage in Deno
```typescript import { OutgoingMessage } from "node:node__http.d.ts"; ```
OutgoingMessage.prototype.flushHeaders(): void
Flushes the message headers.
For efficiency reason, Node.js normally buffers the message headers
until `outgoingMessage.end()` is called or the first chunk of message data
is written. It then tries to pack the headers and data into a single TCP
packet.
It is usually desired (it saves a TCP round-trip), but not when the first
data is not sent until possibly much later. `outgoingMessage.flushHeaders()` bypasses the optimization and kickstarts the message.
void