make it work
This commit is contained in:
parent
e927202fc0
commit
feab5967b2
5 changed files with 57 additions and 20 deletions
35
Cargo.lock
generated
35
Cargo.lock
generated
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@ -360,6 +360,7 @@ dependencies = [
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"rumqttc",
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"rumqttc",
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"serde",
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"serde",
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"serde_json",
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"serde_json",
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"socket2 0.4.10",
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]
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]
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[[package]]
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[[package]]
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@ -559,6 +560,16 @@ version = "0.4.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "04dc19736151f35336d325007ac991178d504a119863a2fcb3758cdb5e52c50d"
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checksum = "04dc19736151f35336d325007ac991178d504a119863a2fcb3758cdb5e52c50d"
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[[package]]
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name = "socket2"
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version = "0.4.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9f7916fc008ca5542385b89a3d3ce689953c143e9304a9bf8beec1de48994c0d"
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dependencies = [
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"libc",
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"winapi",
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]
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[[package]]
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[[package]]
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name = "socket2"
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name = "socket2"
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version = "0.5.10"
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version = "0.5.10"
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@ -628,7 +639,7 @@ dependencies = [
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"mio",
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"mio",
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"pin-project-lite",
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"pin-project-lite",
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"slab",
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"slab",
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"socket2",
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"socket2 0.5.10",
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"tokio-macros",
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"tokio-macros",
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"windows-sys 0.52.0",
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"windows-sys 0.52.0",
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]
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]
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@ -678,6 +689,28 @@ version = "0.11.1+wasi-snapshot-preview1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
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checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
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[[package]]
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name = "winapi"
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version = "0.3.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
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dependencies = [
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"winapi-i686-pc-windows-gnu",
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"winapi-x86_64-pc-windows-gnu",
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]
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[[package]]
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name = "winapi-i686-pc-windows-gnu"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
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[[package]]
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name = "winapi-x86_64-pc-windows-gnu"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
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[[package]]
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[[package]]
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name = "windows-sys"
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name = "windows-sys"
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version = "0.52.0"
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version = "0.52.0"
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@ -8,3 +8,4 @@ rumqttc = "0.23"
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serde = { version = "1.0", features = ["derive"] }
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serde = { version = "1.0", features = ["derive"] }
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serde_json = "1.0"
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serde_json = "1.0"
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clap = { version = "4.4", features = ["derive"] }
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clap = { version = "4.4", features = ["derive"] }
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socket2 = "0.4.7"
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12
README.md
Normal file
12
README.md
Normal file
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@ -0,0 +1,12 @@
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# Position client
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Example client to get Positon data from the bornhack pixelflut touch screen
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```
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./run.sh network_interface_name
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```
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The positon data is a UDP packet of 4 bytes containing 2 usigned 16bit ints for x and y on multicast group 239.1.1.1 port 1234
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3
run.sh
Executable file
3
run.sh
Executable file
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@ -0,0 +1,3 @@
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#!/bin/sh
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sudo ip addr add 239.1.1.1/32 dev $1 autojoin
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cargo run
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26
src/main.rs
26
src/main.rs
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@ -2,6 +2,8 @@ use std::net::UdpSocket;
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use std::env;
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use std::env;
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use std::process;
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use std::process;
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use std::convert::TryInto;
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use std::convert::TryInto;
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use socket2::{Domain, Socket, Type};
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use std::net::{Ipv4Addr, SocketAddr};
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/// Unpacks a 4-byte slice into two u16 values (little-endian).
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/// Unpacks a 4-byte slice into two u16 values (little-endian).
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fn unpack_coordinates(buffer: &[u8]) -> Option<(u16, u16)> {
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fn unpack_coordinates(buffer: &[u8]) -> Option<(u16, u16)> {
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@ -21,28 +23,14 @@ fn unpack_coordinates(buffer: &[u8]) -> Option<(u16, u16)> {
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}
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}
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fn main() {
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fn main() {
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let args: Vec<String> = env::args().collect();
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if args.len() != 3 {
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let socket = Socket::new(Domain::IPV4, Type::DGRAM, None).unwrap();
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eprintln!("Usage: {} <listen_ip> <listen_port>", args[0]);
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socket.set_reuse_address(true).unwrap();
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eprintln!("Example: {} 127.0.0.1 12345", args[0]);
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process::exit(1);
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}
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let listen_addr = &args[1];
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socket.join_multicast_v4(&Ipv4Addr::new(239, 1, 1, 1), &Ipv4Addr::new(0, 0, 0, 0)).unwrap();
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let listen_port = &args[2];
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socket.bind(&"0.0.0.0:1234".parse::<SocketAddr>().unwrap().into()).unwrap();
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let bind_address = format!("{}:{}", listen_addr, listen_port);
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// Bind the UDP socket to the specified address and port.
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let socket: UdpSocket = socket.into();
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let socket = match UdpSocket::bind(&bind_address) {
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Ok(s) => s,
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Err(e) => {
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eprintln!("Error: Could not bind to address {}: {}", bind_address, e);
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process::exit(1);
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}
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};
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println!("Listening for UDP packets on {}", bind_address);
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// Create a buffer to hold incoming data. 4 bytes for two u16 values.
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// Create a buffer to hold incoming data. 4 bytes for two u16 values.
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let mut buf = [0u8; 4];
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let mut buf = [0u8; 4];
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