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TCP Westwood+ is based on end-to-end bandwidth estimation to set the congestion window and slow-start threshold after a congestion episode, that is, after three duplicate acknowledgments or a timeout. The bandwidth is estimated by averaging the rate of returning acknowledgment packets.
A TCP connection is identified by a four-tuple of the source address, source port, destination address, and destination port. Port numbers are used to identify different services, and to allow multiple connections between hosts.
HTTP persistent connection, also called HTTP keep-alive, or HTTP connection reuse, is the idea of using a single TCP connection to send and receive multiple HTTP requests/responses, as opposed to opening a new connection for every single request/response pair.
Upon receiving an IP packet with the Congestion Experienced code point, the TCP receiver echoes back this congestion indication using the ECE flag in the TCP header. When an endpoint receives a TCP segment with the ECE bit it reduces its congestion window as for a packet drop.
Possible fixes. Occasionally you may receive this error which usually corrects itself within a few minutes to a few hours. Learn about possible workarounds for Temporary Error 20 in AOL Mail.
The TCP_QUICKACK flag is available on Linux since 2001 (2.4.4) and potentially on Windows, where the official interface is SIO_TCP_SET_ACK_FREQUENCY. Setting TcpAckFrequency to 1 in the Windows registry turns off delayed ACK by default. On FreeBSD, the sysctl entry net.inet.tcp.delayed_ack controls the default behavior.
The Transmission Control Protocol (TCP) detects packet loss and performs retransmissions to ensure reliable messaging. Packet loss in a TCP connection is also used to avoid congestion and thus produces an intentionally reduced throughput for the connection.
TCP tuning techniques adjust the network congestion avoidance parameters of Transmission Control Protocol (TCP) connections over high-bandwidth, high-latency networks. Well-tuned networks can perform up to 10 times faster in some cases.
WebSocket is a computer communications protocol, providing a simultaneous two-way communication channel over a single Transmission Control Protocol (TCP) connection. The WebSocket protocol was standardized by the IETF as RFC 6455 in 2011. The current specification allowing web applications to use this protocol is known as WebSockets. [1]
The Transmission Control Protocol (TCP), although standardized for RTP use, is not normally used in RTP applications because TCP favors reliability over timeliness. Instead, the majority of the RTP implementations are built on the User Datagram Protocol (UDP). [5]