add WIP extra packet validation

rust/client/src/big_array.rs

@@ -63,6 +63,5 @@ macro_rules! big_array {
 }
 
 big_array! {
-    40, 48, 50, 56, 64, 72, 96, 100, 128, 160, 192, 200, 224, 256, 384, 488, 500, 512,
-    768, 1024, 2048, 4096, 8192, 16384, 32768, 65536,
+    496, 500, 512,
 }

rust/client/src/main.rs

@@ -10,7 +10,7 @@ use big_array::BigArray;
 
 const MAX_FRAME_PAYLOAD:u16=508;
 const MAX_FRAME_PAYLOAD_U:usize=MAX_FRAME_PAYLOAD as usize;
-const HEADER_SIZE:u16 = 8;
+const HEADER_SIZE:u16 = 12;
 const MAX_PAYLOAD:u16 = MAX_FRAME_PAYLOAD - HEADER_SIZE;
 const MAX_PAYLOAD_U:usize = MAX_PAYLOAD as usize;
 
@@ -25,6 +25,7 @@ struct PacketInformation {
 struct Packet {
     packet_number: u32, //4 bytes
     payload_hash: [u8; 4], //4 bytes
+    payload_sum_hash: u32, //4 bytes
     #[serde(with = "BigArray")]
     payload: [u8; MAX_PAYLOAD_U],
 } //508 bytes
@@ -107,8 +108,10 @@ fn main() {
 
     //create vector to store the packets
     let mut packets: Vec<Vec<u8>> = Vec::new();
+    let mut packet_hashes: Vec<u32> = Vec::new();
     for _ in 0..packet_info.packet_numbers {
         packets.push(Vec::new());
+        packet_hashes.push(0);
     }
 
     let mut received_packets = 0;
@@ -155,6 +158,7 @@ fn main() {
                         if p.payload_hash != hash.to_be_bytes() {
                             continue;
                         }
+                        packet_hashes[p.packet_number as usize] = p.payload_sum_hash;
 
                         packet = p;
                     } else {
@@ -217,6 +221,15 @@ fn main() {
         print!("Packet {}/{}\r", received_packets, packet_info.packet_numbers);
     }
 
+    let mut crc32 = crc32fast::Hasher::new();
+    for i in 0..packets.len() {
+        crc32.update(&packets[i]);
+        if packet_hashes[i] != crc32.clone().finalize() {
+            println!("Packet {} hash does not match", i);
+            todo!("Request packets again")
+        }
+    }
+
     //check hash via sha512
 
     let mut hasher = Sha512::new();