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socket: RawSocket,
headers: EthIpUdp,
connection: SaprusMessage,
const Connection = @This();
pub fn init(socket: RawSocket, headers: EthIpUdp, connection: SaprusMessage) Connection {
return .{
.socket = socket,
.headers = headers,
.connection = connection,
};
}
pub fn next(self: Connection, io: Io, buf: []u8) ![]const u8 {
_ = io;
const res = try self.socket.receive(buf);
const connection_res = blk: {
const msg: SaprusMessage = try .parse(res[42..]);
break :blk msg.connection;
};
return connection_res.payload;
}
pub fn send(self: *Connection, io: Io, buf: []const u8) !void {
const rand = blk: {
const io_source: std.Random.IoSource = .{ .io = io };
break :blk io_source.interface();
};
self.connection.connection.payload = buf;
const connection_bytes = blk: {
var connection_bytes: [2048]u8 = undefined;
break :blk self.connection.toBytes(&connection_bytes);
};
self.headers.setPayloadLen(connection_bytes.len);
self.headers.ip.id = rand.int(u16);
const full_msg = blk: {
var msg_buf: [2048]u8 = undefined;
var msg_w: Writer = .fixed(&msg_buf);
try msg_w.writeAll(&self.headers.toBytes());
try msg_w.writeAll(connection_bytes);
break :blk msg_w.buffered();
};
try self.socket.send(full_msg);
}
const std = @import("std");
const Io = std.Io;
const Writer = std.Io.Writer;
const SaprusMessage = @import("./message.zig").Message;
const EthIpUdp = @import("./EthIpUdp.zig").EthIpUdp;
const RawSocket = @import("./RawSocket.zig");
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