Move sendRelay logic to Saprus struct

src/saprus.zig

@@ -0,0 +1,43 @@
+pub fn init() !void {
+    try network.init();
+}
+
+pub fn deinit() void {
+    network.deinit();
+}
+
+pub fn sendRelay(payload: []const u8, allocator: std.mem.Allocator) !void {
+    const msg = SaprusMessage{
+        .relay = .{
+            .header = .{ .dest = .{ 255, 255, 255, 255 } },
+            .payload = payload,
+        },
+    };
+
+    const msg_bytes = try msg.toBytes(allocator);
+    defer allocator.free(msg_bytes);
+
+    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 SaprusMessage = @import("./saprus_message.zig").SaprusMessage;
+const std = @import("std");
+const network = @import("network");