Add a way to print sent messages (in comments).

src/context.zig

@@ -1,10 +1,13 @@
 const std = @import("std");
 const testing = std.testing;
+// const DEBUG = @import("./hexdump.zig");
 const net = std.net;
 const os = std.os;
 const fmt = std.fmt;
 const c = std.c;
 
+// const print = std.debug.print;
+
 // TODO: to remove once PR https://github.com/ziglang/zig/pull/14639 is accepted.
 pub extern "c" fn umask(mode: c.mode_t) c.mode_t;
 
@@ -285,6 +288,12 @@ pub const Context = struct {
         _ = try m.write(writer); // returns paylen
 
         _ = try stream.write(fbs.getWritten());
+
+        // var hexbuf: [2000]u8 = undefined;
+        // var hexfbs = std.io.fixedBufferStream(&hexbuf);
+        // var hexwriter = hexfbs.writer();
+        // try DEBUG.hexdump(hexwriter, "MSG SENT", fbs.getWritten());
+        // print("{s}\n", .{hexfbs.getWritten()});
     }
 
     pub fn schedule(self: *Self, m: Message) !void {