domain_maxconnecting verifiedimportantWritten by the Hub
Connections being established
How many connections to one domain may be in the middle of being established at once — shipped at one.
In detail
A rare non-zero default, and a deliberate one. Opening a connection means DNS, TCP, TLS and a greeting — several seconds during which nothing has been sent. Allowing only one at a time means the node discovers a slow or refusing receiver before it has committed to ten more attempts at it. It is also a throughput ceiling nobody expects: to a slow receiver, the node can only ramp up as fast as one handshake at a time completes. Anyone wondering why a fresh node is not reaching its configured message rate should look here before anywhere else.
What happens if you get it wrong
Left at one against a slow receiver during a large send.The node cannot open connections fast enough to use its own message limit; throughput is governed by handshake latency and the configured rate is never reached.inference