c# - WCF discovery with service hosts using net.tcp://0.0
In theory you could build a custom TCP stack in which listening on or connecting from port 0 works, which means that two such implementations could talk to each other on port 0… Transmission Control Protocol - Wikipedia Each side of a TCP connection has an associated 16-bit unsigned port number (0-65535) reserved by the sending or receiving application. Arriving TCP packets are identified as belonging to a specific TCP connection by its sockets, that is, the combination of source host address, source port, destination host address, and destination port. TC PipeLines, LP (TCP) Stock Price, Quote, History & News Find the latest TC PipeLines, LP (TCP) stock quote, history, news and other vital information to help you with your stock trading and investing. TCP Flags - KeyCDN Support
A "zero-length" TCP packet merely means that the party sending it had no payload to send but needed to inform the other one about something, e.g. about successful reception of data or, vice versa, about missing data which need to be retransmitted.
Understanding TCP/IP addressing and subnetting basics Dec 19, 2019 Troubleshooting "TCP Zero Window" Issues - Network
TCP: Freeciv versions up to 2.0, Hewlett-Packard Data Protector, McAfee EndPoint Encryption Database Server, SAP, Default for Microsoft Dynamics CRM 4.0: 非公式 5556: TCP: UDP: Freeciv, Oracle WebLogic Server Node Manager: 公式 5591: TCP
tcp(7): TCP protocol - Linux man page