Allow use of custom port and bind_addr.

server/src/main.rs

@@ -1,13 +1,31 @@
+use std::env;
+
 use actix_web::{App, get, HttpResponse, HttpServer, Responder};
 
+use crate::util::warn_println;
+
 mod util;
 
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
     util::print_copyright_notice();
 
-    let port = 8000;
-    let bind_addr = "127.0.0.1";
+    // Default Server Values
+    let mut port = 8000;
+    let mut bind_addr = String::from("127.0.0.1");
+
+    // If env variable for port or bind_addr is present use that instead of default.
+    if let Ok(env_port) = env::var("PORT") {
+        if let Ok(env_port) = env_port.parse::<u16>() {
+            port = env_port;
+        } else {
+            warn_println("Failed to parse PORT env variable using default value.");
+        }
+    }
+
+    if let Ok(env_addr) = env::var("BIND_ADDR") {
+        bind_addr = env_addr;
+    }
 
     util::notice_println(format!("Starting server on {}:{}", bind_addr, port));