feat: added basic structure around packet transfer

2023-09-25 23:24:37 -04:00
parent 867464f673
commit 0bda72491c
3 changed files with 154 additions and 16 deletions
--- a/packets/src/lib.rs
+++ b/packets/src/lib.rs
@@ -600,7 +600,12 @@ impl TCPPacketBuilder {
        let seqnumber = self.seqnumber.unwrap();
        let window = self.window.unwrap();

-        let len: u8 = (self.options.len() / 4 + 5).try_into().unwrap();
+        let mut options = self.options;
+        while options.len() % 4 != 0 {
+            options.push(0);
+        }
+
+        let len: u8 = (options.len() / 4 + 5).try_into().unwrap();
        let len = len << 4;

        let mut bytes = [
@@ -617,7 +622,7 @@ impl TCPPacketBuilder {
            &window.to_be_bytes(),
            &[0, 0],
            &self.urgent_ptr.to_be_bytes(),
-            &self.options,
+            &options,
            &data,
        ]
        .concat();