Protochannel

Protochannel refers to a concept in computer networking and distributed systems that describes a preliminary or initial channel established between two or more entities. This channel is not necessarily a fully functional communication link but serves as a handshake or negotiation mechanism. The purpose of a protochannel is typically to exchange essential information that allows for the subsequent establishment of a more robust and feature-rich communication channel.

This might involve identifying capabilities, agreeing on protocols, or exchanging initial security credentials. For example, in a client-server interaction, a protochannel could be used to negotiate the specific application protocol that will be employed for further data exchange. Similarly, in a peer-to-peer network, a protochannel might be used to discover and connect to other nodes before a full communication session is initiated. The term suggests a channel that is in its nascent stage, awaiting further development or configuration to become fully operational. It emphasizes the preparatory nature of the communication link.