Function encodeChunk

src/upstreamproxy/relay.ts:66–81

(data: Uint8Array)

 * the hand encoding is 10 lines and avoids a runtime dep in the hot path.
 */
export function encodeChunk(data: Uint8Array): Uint8Array {
  const len = data.length
  // varint encoding of length — most chunks fit in 1–3 length bytes
  const varint: number[] = []
  let n = len
  while (n > 0x7f) {
    varint.push((n & 0x7f) | 0x80)
    n >>>= 7
  }
  varint.push(n)
  const out = new Uint8Array(1 + varint.length + len)
  out[0] = 0x0a
  out.set(varint, 1)
  out.set(data, 1 + varint.length)
  return out
}

/**
 * Decode an UpstreamProxyChunk. Returns the data field, or null if malformed.