A client is the participant that initiates a request or sends a message to a service or peer. In channel-based Rust programs, this role is represented by the sending end, conventionally named tx, while rx receives the reply or work item. section 10.4.4
Channels separate sending from receiving: a client places data into a channel, and another thread receives it later. This supports one-way communication, request-and-response exchanges, and task queues without exposing the channel’s internal transport. section 10.4.4
A client sends a request
A spawned thread sends 42 through tx, while the receiving side selects on rx and prints Ok(42). A two-channel example extends the pattern: a client sends Ping requests and receives Pong responses; Pang ends the worker.
