made basic TCP connection to receive data

somewhat

packets/src/lib.rs

@@ -628,7 +628,7 @@ impl TCPPacket {
     }
 }
 
-#[derive(Default)]
+#[derive(Default, Debug)]
 pub struct TCPPacketBuilder {
     srcport: Option<u16>,
     dstport: Option<u16>,
@@ -762,7 +762,7 @@ impl TCPPacketBuilder {
 
         let checksum = (checksum >> 16) + (checksum & 0xffff);
         let checksum = ((checksum >> 16) as u16) + (checksum as u16);
-        let checksum = dbg!(!checksum).to_be_bytes();
+        let checksum = (!checksum).to_be_bytes();
 
         //bytes[16] = checksum[0];
         //bytes[17] = checksum[1];