Initial commit with DNS resolution

Cargo.lock

@@ -0,0 +1,135 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "argv"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87b48bbc752e97f1b6d7f237c0fd50056f19417e30b10121d4065d1459270e1d"
+
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+dependencies = [
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "damnitisp"
+version = "0.1.0"
+dependencies = [
+ "gflags",
+]
+
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+dependencies = [
+ "argv",
+ "gflags-impl",
+ "inventory",
+ "ref-cast",
+]
+
+[[package]]
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+]
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+ "inventory-impl",
+]
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+]
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+ "proc-macro2",
+]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
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Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "damnitisp"
+version = "0.1.0"
+authors = ["Jeremy Wall <jeremy@marzhillstudios.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+gflags = "^0.3"

src/main.rs

@@ -0,0 +1,54 @@
+use gflags;
+
+use std::io;
+use std::net::{SocketAddr, ToSocketAddrs};
+
+gflags::define! {
+    /// Print this help text.
+    -h, --help = false
+}
+
+gflags::define! {
+    /// Delay between lookup attempts in seconds.
+    --delaySec: i32 = 60
+}
+
+gflags::define! {
+    /// Port to listen on for exporting variables prometheus style.
+    --listenPort: i32 = 0
+}
+
+gflags::define! {
+    /// Retry dns infinitenly until we resolve.
+    --dnsRetryInfinite = false
+}
+
+fn resolveAddrs(servers: Vec<&str>) -> io::Result<Vec<SocketAddr>> {
+    let mut results = Vec::new();
+    for name in servers {
+        eprintln!("Resolving {}", name);
+        results.extend(name.to_socket_addrs()?);
+    }
+    return Ok(results);
+}
+
+fn main() {
+    let default_stun_servers: Vec<&'static str> = vec![
+        "stun.l.google.com:19302",
+        "stun.ekiga.net:3478",
+        "stunserver.org:3478",
+        "stun.xten.com:3478",
+        "stun.softjoys.com:3478",
+        "stun1.noc.ams-ix.net:3478",
+    ];
+    let mut stun_servers = gflags::parse();
+
+    if HELP.flag {
+        // TODO print better help than this.
+        gflags::print_help_and_exit(0);
+    }
+    if stun_servers.is_empty() {
+        stun_servers = default_stun_servers;
+    }
+    let socketAddrs = resolveAddrs(stun_servers).unwrap();
+}