fix: node connection add missing verack message (#160)

src/network/peer.zig

@@ -82,6 +82,8 @@ pub const Peer = struct {
                 .version => |vm| {
                     self.protocol_version = @min(self.config.protocol_version, vm.version);
                     self.services = vm.addr_from.services;
+                    // send verack message
+                    try self.sendVerackMessage();
                 },
 
                 .verack => return,
@@ -119,6 +121,18 @@ pub const Peer = struct {
         );
     }
 
+    /// Send verack message to peer
+    fn sendVerackMessage(self: *const Peer) !void {
+        const verack_message = protocol.messages.VerackMessage{};  // Empty message, as verack doesn't carry data
+        try wire.sendMessage(
+            self.allocator,
+            self.stream.writer(),
+            self.config.protocol_version,
+            self.config.network_id,
+            verack_message,
+        );
+    }
+
     pub fn listen(self: *Peer) void {
         std.log.info("Listening for messages from {any}", .{self.address});
         while (self.should_listen) {

src/network/protocol/messages/lib.zig

@@ -179,8 +179,6 @@ pub fn genericChecksum(m: anytype) [4]u8 {
 }
 
 pub fn genericSerialize(m: anytype, allocator: std.mem.Allocator) ![]u8 {
-    std.debug.print("Type m: {}\n", .{@TypeOf(m)});
-
     comptime {
         if (!std.meta.hasMethod(@TypeOf(m), "hintSerializedLen")) @compileError("Expects m to have fn 'hintSerializedLen'.");
         if (!std.meta.hasMethod(@TypeOf(m), "serializeToWriter")) @compileError("Expects m to have fn 'serializeToWriter'.");