sending getblocks message but not getting back the expected inv

yzernik

newbie

Activity: 3

Merit: 0

Thank you. It looks like my problem is the way that I am decoding the inv message.

TierNolan

legendary

Activity: 1232

Merit: 1094

Quote from: yzernik on January 13, 2014, 07:48:08 PM

I also tried it with the genesis block hash reversed, without any success.

It seems ok, decoding:

MAGIC: f9beb4d9
Command: 676574626c6f636b73000000
Size: 45000000
CRC: 8634d5ae

Version: 01000000
count: 01
Genesis: 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
Stop: 0000000000000000000000000000000000000000000000000000000000000000

Can you try with the genesis set to all zeros and also with count==0 (so just the stop field).

If you give it no block it knows about, it should start again at genesis.

yzernik

newbie

Activity: 3

Merit: 0

Similar question to this one https://bitcointalksearch.org/topic/debugging-getblocks-on-initial-chain-download-54892

I am trying to download the blockchain from the beginning (genesis). I have hardcoded the genesis block in my client program.

I have most of the protocol message are working. I connect using the version and verack messages. I can send a ping and get back the correct pong.

But when I send a getblocks message, I don't get back any inv with a MSG_BLOCK in it. I periodically receive inv messages, but they only contain a few MSG_TX's.

These are the raw bytes that I send as my getblock message.

Code:

f9beb4d9676574626c6f636b73000000450000008634d5ae0100000001000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f0000000000000000000000000000000000000000000000000000000000000000

I also tried it with the genesis block hash reversed, without any success.

Topic: sending getblocks message but not getting back the expected inv (Read 543 times)