Method pickHTTPClient

internal/carrier/client.go:921–927

pickHTTPClient returns the next HTTP client in round-robin order. Each client has a distinct SNI host and connection pool, so successive calls naturally spread requests across separate throttle buckets.

()

// client has a distinct SNI host and connection pool, so successive calls
// naturally spread requests across separate throttle buckets.
func (c *Client) pickHTTPClient() *http.Client {
	if len(c.httpClients) == 1 {
		return c.httpClients[0]
	}
	idx := c.nextHTTP.Add(1) - 1
	return c.httpClients[idx%uint64(len(c.httpClients))]
}

// pickRelayEndpoint picks the next non-blacklisted endpoint in round-robin
// order. The per-bucket in-flight semaphore is enforced separately by