NAT traversal has become an increasingly more significant
issue in the current real-world network environment. To address
this issue, MCP uses one-way communication. One-way communication
has the MCP agent initiating the connection to, and polling of commands
from, the server. Each request is a CGI-like command query or log
transmission. To reduce the network impact, the MCP agent keeps
connection alive and open as much as possible. A subsequent request
uses an existing open connection. If the connection breaks, all
SSL connections to the same host benefit from session ID cache that
drastically reduces re-connection time.
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