i will be able to obtain the model message however node does no longer reply to my getblocks request.

this my built byte array :

Magic = 249,190,180,217
Command = 103,101,116,98,108,111,99,107,115,0,0,0
Period = 69,0,0,0
Checksum = 11,166,179,194
Protocol Model = 127,17,1,0
Hash Quantity = 1
Hash = 246,46,200,160,107,31,59,39,28,106,42,100,234,54,127,244,57,
  225,56,86,30,165,128,201,134,109,145,0,0,0,0
StopHash = 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>>

Request = Magic + Command + Period + Checksum + Protocol Model + Hash Quantity + Hash + StopHash

that is the request i ship and the node and get no reaction and that i have no idea why.
i additionally learn bitcoin developer information and it didn’t assist.

the model message :

249,190,180,217 -> magic
118,101,114,115,105,111,110,0,0,0,0,0 -> command
85,0,0,0 -> period
58,51,118,189, -> checksum
127,17,1,0 -> model
1,0,0,0,0,0,0,0 > choices
144,189,33,101,0,0,0 ->timestamp
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 -> src and dest addrs
230,85,204,238,180,118,227,128 -> nonce
0 -> user_agent
0,0,0,0 - top

thank you prematurely.