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What protocol do bitcoin nodes use to speak to one another?

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What protocol do bitcoin nodes use to speak to one another?

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What protocol do bitcoin nodes use to speak to one another?

Most Bitcoin nodes will primarily use:

Layer Protocol
Utility Layer Bitcoin Protocol
Transport Layer Transport Management Protocol (TCP)
Inter-Community Layer Web Protocol (IPV4 and/or IPV6), Web Management Message Protocol (ICMP)
Community Entry Layer 1000BASE-T / IEEE 802.3ab Ethernet

Clearly there are dependencies on different protocols which aren’t used straight by the Bitcoin node utility itself (e.g. DNS by way of a reputation decision service). The appliance will probably be utilizing working system libraries that handle the decrease three layers. The precept APIs used will probably be these associated to opening and shutting TCP connections and writing to and studying from these connections. Maybe utilizing some variant of the Berkeley “sockets” API.

This is an instance community packet

Wireshark decode of Bitcoin message packet
Supply


how would I program a quite simple C++ program that sends a take a look at message to a node?

Though the protocol is not particularly difficult, I personally would not characterise writing a consumer as “quite simple”. That’s, I would not select it as my first community protocol to write down a consumer for.

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