Is this necessarily true though? I know that TCP acks and seqs contain info about the packets that have already been seen, so if only one packet is missing, the

Is this necessarily true though? I know that TCP acks and seqs contain info about the packets that have already been seen, so if only one packet is missing, the client will tell the server almost immediately, at which point the onus is on the server to resend quickly. This would be at the Linux network layer however. Found an article explaining the concept, called selective acknowledgment: https://en.wikipedia.org/wiki/Transmission_Control_Protocol#Selective_acknowledgments https://en.wikipedia.org/wiki/Transmission_Control_Protocol#... Would reducing the retransmission delay be sufficient? Or simply letting the browser open two connections to a standard HTTP port?