Break relay into a specific program

src/main.zig

@@ -1,71 +0,0 @@
-const is_debug = builtin.mode == .Debug;
-
-/// This creates a debug allocator that can only be referenced in debug mode.
-/// You should check for is_debug around every reference to dba.
-var dba: DebugAllocator =
-    if (is_debug)
-        DebugAllocator.init
-    else
-        @compileError("Should not use debug allocator in release mode");
-
-pub fn main() !void {
-    defer if (is_debug) {
-        _ = dba.deinit();
-    };
-
-    var gpa = if (is_debug) dba.allocator() else std.heap.smp_allocator;
-
-    const args = try std.process.argsAlloc(gpa);
-    defer std.process.argsFree(gpa, args);
-
-    var message = ArrayList(u8).init(gpa);
-    defer message.deinit();
-
-    for (args[1..], 0..) |arg, i| {
-        try message.appendSlice(arg);
-        if (i < args.len - 1)
-            try message.append(' ');
-    }
-
-    const msg = SaprusMessage{
-        .relay = .{
-            .header = .{ .dest = .{ 255, 255, 255, 255 } },
-            .payload = if (message.items.len > 0) message.items else "Hello darkness my old friend",
-        },
-    };
-
-    const msg_bytes = try msg.toBytes(gpa);
-    defer gpa.free(msg_bytes);
-
-    try network.init();
-    defer network.deinit();
-
-    var sock = try network.Socket.create(.ipv4, .udp);
-    defer sock.close();
-
-    try sock.setBroadcast(true);
-
-    // Bind to 0.0.0.0:0
-    const bind_addr = network.EndPoint{
-        .address = network.Address{ .ipv4 = network.Address.IPv4.any },
-        .port = 0,
-    };
-
-    const dest_addr = network.EndPoint{
-        .address = network.Address{ .ipv4 = network.Address.IPv4.broadcast },
-        .port = 8888,
-    };
-
-    try sock.bind(bind_addr);
-
-    _ = try sock.sendTo(dest_addr, msg_bytes);
-}
-
-const builtin = @import("builtin");
-const std = @import("std");
-const DebugAllocator = std.heap.DebugAllocator(.{});
-const ArrayList = std.ArrayList;
-
-const network = @import("network");
-
-const SaprusMessage = @import("./saprus_message.zig").SaprusMessage;