![]() In addition, the compact block relay proposal also provides a second mode of operation (called high bandwidth mode) where the receiving node asks a few of its peers to send new blocks directly without asking for permission first, which may increase bandwidth (because two peers may try sending the same block at the same time) but which further reduces the amount of time it takes blocks to arrive (latency) on high-bandwidth connections. The advantage of this approach is that transactions only need to be sent once in the best case-when they are originally broadcast-providing a large reduction in overall bandwidth. If it is still missing any transactions, it will request those from the transmitting peer. The receiving peer then tries to reconstruct the entire block using the received information and the transactions already in its memory pool. Some full transactions which the sending peer predicts the receiving peer doesn’t have yet.Shortened transaction identifiers (txids), that are designed to prevent Denial-of-Service (DoS) attacks.These sketches include the following information: Peers send compact block “sketches” to receiving peers. Using simple techniques it is possible to reduce the amount of bandwidth necessary to propagate new blocks to full nodes when they already share much of the same mempool contents. How can this be adapted for even faster p2p relay?Ĭompact block relay, BIP152, is a method of reducing the amount of bandwidth used to propagate new blocks to full nodes.What is the timeline on coding, testing, reviewing and deploying compact block propagation?. ![]() How does the Fast Relay Network factor into this?.How are expected missing transactions chosen to immediately forward?.What are some useful benchmarks for this?. ![]()
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