initial coommit

This commit is contained in:
Luna 2022-12-19 21:24:55 -03:00
commit 5c5ea52deb
7 changed files with 134 additions and 0 deletions

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.gitattributes vendored Normal file
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* text=auto
*.zig text eol=lf
zigmod.* text eol=lf

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zig-*
.zigmod
deps.zig

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LICENSE Normal file
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MIT License
Copyright (c) 2022 Luna
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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build.zig Normal file
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const std = @import("std");
const deps = @import("deps.zig");
pub fn build(b: *std.build.Builder) void {
// Standard target options allows the person running `zig build` to choose
// what target to build for. Here we do not override the defaults, which
// means any target is allowed, and the default is native. Other options
// for restricting supported target set are available.
const target = b.standardTargetOptions(.{});
// Standard release options allow the person running `zig build` to select
// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
const mode = b.standardReleaseOptions();
const exe = b.addExecutable("unicorn_screams", "src/main.zig");
exe.setTarget(target);
exe.setBuildMode(mode);
exe.install();
deps.addAllTo(exe);
const run_cmd = exe.run();
run_cmd.step.dependOn(b.getInstallStep());
if (b.args) |args| {
run_cmd.addArgs(args);
}
const run_step = b.step("run", "Run the app");
run_step.dependOn(&run_cmd.step);
const exe_tests = b.addTest("src/main.zig");
exe_tests.setTarget(target);
exe_tests.setBuildMode(mode);
const test_step = b.step("test", "Run unit tests");
test_step.dependOn(&exe_tests.step);
}

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src/main.zig Normal file
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const std = @import("std");
const network = @import("network");
const logger = std.log.scoped(.udp2udp2udp);
fn incomingAddr(args_it: anytype) !network.EndPoint {
const addr_string = args_it.next().?;
const port_string = args_it.next().?;
const port = try std.fmt.parseInt(u16, port_string, 10);
const zig_addr = try std.net.Address.parseIp(addr_string, port);
const socklen = zig_addr.getOsSockLen();
return network.EndPoint.fromSocketAddress(&zig_addr.any, socklen);
}
const WantedMode = enum { send, recv };
const AddrTuple = struct { from: network.EndPoint, to: network.EndPoint };
const Mode = union(enum) { send: AddrTuple, recv: AddrTuple };
pub fn main() !void {
try network.init();
defer network.deinit();
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer {
_ = gpa.deinit();
}
const allocator = gpa.allocator();
var args_it = try std.process.argsWithAllocator(allocator);
defer args_it.deinit();
_ = args_it.skip();
const from = try incomingAddr(&args_it);
const to = try incomingAddr(&args_it);
std.log.info("taking udp from: {s}", .{from});
std.log.info("spitting udp to: {s}", .{to});
logger.info("init udp", .{});
var from_sock = try network.Socket.create(.ipv4, .udp);
defer from_sock.close();
try from_sock.enablePortReuse(true);
try from_sock.bind(from);
var to_sock = try network.Socket.create(.ipv4, .udp);
defer to_sock.close();
var receive_buffer: [2048]u8 = undefined;
while (true) {
const reader = from_sock.reader();
const received_bytes = try reader.read(&receive_buffer);
const bytes = receive_buffer[0..received_bytes];
const sent_bytes = try to_sock.sendTo(to, bytes);
if (sent_bytes != received_bytes) {
logger.warn(
"tried to send {d} bytes, actually sent {d}",
.{ received_bytes, sent_bytes },
);
}
}
}

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2
git https://github.com/MasterQ32/zig-network commit-caa31ef8783695f0441b1f6812985e6a46b32c96

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zigmod.yml Normal file
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id: jsmj7bl93sbzxlt10ezhp6j2pe24xmotxmeerhoyxtmvsjkk
name: unicorn_screams
license: MIT
description: Relay Scream packets between two UDP addresses
root_dependencies:
- src: git https://github.com/MasterQ32/zig-network