From 157afa13b1f670ec7e8264056c19785f46cb339c Mon Sep 17 00:00:00 2001
From: Robby Zambito <contact@robbyzambito.me>
Date: Sat, 24 Jan 2026 10:38:52 -0500
Subject: Fix checksum issue

---
 src/Client.zig | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/Client.zig')

diff --git a/src/Client.zig b/src/Client.zig
index 76de9fe..6df577f 100644
--- a/src/Client.zig
+++ b/src/Client.zig
@@ -95,12 +95,15 @@ pub fn connect(self: Client, io: Io, payload: []const u8) !SaprusConnection {
         },
     };
 
+    log.debug("Setting bpf filter to port {}", .{connection.connection.src});
     try self.socket.attachSaprusPortFilter(connection.connection.src);
+    log.debug("bpf set", .{});
 
     var connection_buf: [2048]u8 = undefined;
     var connection_bytes = connection.toBytes(&connection_buf);
     headers.setPayloadLen(connection_bytes.len);
 
+    log.debug("Building full message", .{});
     var full_msg = blk: {
         var msg_buf: [2048]u8 = undefined;
         var msg_w: Writer = .fixed(&msg_buf);
@@ -108,17 +111,21 @@ pub fn connect(self: Client, io: Io, payload: []const u8) !SaprusConnection {
         msg_w.writeAll(connection_bytes) catch unreachable;
         break :blk msg_w.buffered();
     };
+    log.debug("Built full message. Sending message", .{});
 
     try self.socket.send(full_msg);
     var res_buf: [4096]u8 = undefined;
 
     // Ignore response from sentinel, just accept that we got one.
+    log.debug("Awaiting handshake response", .{});
     _ = try self.socket.receive(&res_buf);
     try io.sleep(.fromMilliseconds(40), .real);
 
     headers.udp.dst_port = udp_dest_port;
     headers.ip.id = rand.int(u16);
+    headers.setPayloadLen(connection_bytes.len);
 
+    log.debug("Building final handshake message", .{});
     full_msg = blk: {
         var msg_buf: [2048]u8 = undefined;
         var msg_w: Writer = .fixed(&msg_buf);
@@ -140,3 +147,4 @@ const EthIpUdp = @import("./EthIpUdp.zig").EthIpUdp;
 const std = @import("std");
 const Io = std.Io;
 const Writer = std.Io.Writer;
+const log = std.log;
-- 
cgit