diff --git a/Cargo.lock b/Cargo.lock
index ae84c6b..6430aa9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -406,7 +406,7 @@ checksum = "514de17de45fdb8dc022b1a7975556c53c86f9f0aa5f534b98977b171857c2c9"
 
 [[package]]
 name = "caesar-transfer-iu"
-version = "0.2.0"
+version = "0.3.1"
 dependencies = [
  "aes-gcm",
  "axum 0.7.5",
diff --git a/Cargo.toml b/Cargo.toml
index 951c5c1..8e8903b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "caesar-transfer-iu"
-version = "0.2.0"
+version = "0.3.1"
 edition = "2021"
 build = "src/build.rs"
 authors = ["Manuel Keidel", "Patryk Hegenberg", "Krzysztof Stankiewicz"]
diff --git a/src/receiver/http_client.rs b/src/receiver/http_client.rs
index df700f0..518b7b8 100644
--- a/src/receiver/http_client.rs
+++ b/src/receiver/http_client.rs
@@ -8,7 +8,7 @@ use crate::relay::transfer::TransferResponse;
 type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
 
 pub async fn download_info(relay: &str, name: &str) -> Result<TransferResponse> {
-    let url = String::from("http://") + relay;
+    let url = String::from(relay);
     let hashed_name = Sha256::digest(name.as_bytes());
     let hashed_string = hex::encode(hashed_name);
 
@@ -25,7 +25,7 @@ pub async fn download_info(relay: &str, name: &str) -> Result<TransferResponse>
 }
 
 pub async fn download_success(relay: &str, name: &str) -> Result<()> {
-    let url = String::from("http://") + relay;
+    let url = String::from(relay);
     let hashed_name = Sha256::digest(name.as_bytes());
     let hashed_string = hex::encode(hashed_name);
 
diff --git a/src/receiver/mod.rs b/src/receiver/mod.rs
index 3e071c7..c31db42 100644
--- a/src/receiver/mod.rs
+++ b/src/receiver/mod.rs
@@ -38,7 +38,7 @@
 pub mod client;
 pub mod http_client;
 
-use crate::receiver::client as receiver;
+use crate::{receiver::client as receiver, sender::util::replace_protocol};
 
 use tokio_tungstenite::{
     connect_async,
@@ -47,9 +47,12 @@ use tokio_tungstenite::{
 use tracing::{debug, error};
 
 pub async fn start_receiver(relay: &str, name: &str) {
-    let res = http_client::download_info(relay, name).await.unwrap();
+    let http_url = replace_protocol(relay);
+    let res = http_client::download_info(http_url.as_str(), name)
+        .await
+        .unwrap();
     debug!("Got room_id from Server: {:?}", res);
-    let res_ip = res.ip + ":9000";
+    let res_ip = String::from("ws://") + res.ip.as_str() + ":9000";
 
     if let Err(local_err) = start_ws_com(res_ip.as_str(), res.local_room_id.as_str()).await {
         debug!("Failed to connect local: {local_err}");
@@ -57,7 +60,7 @@ pub async fn start_receiver(relay: &str, name: &str) {
             debug!("Failed to connect remote: {relay_err}");
         }
     }
-    let success = http_client::download_success(relay, name).await;
+    let success = http_client::download_success(http_url.as_str(), name).await;
     match success {
         Ok(()) => debug!("Success"),
         Err(e) => error!("Error: {e:?}"),
@@ -72,7 +75,7 @@ pub async fn start_receiver(relay: &str, name: &str) {
 }
 
 pub async fn start_ws_com(relay: &str, name: &str) -> Result<(), Box<dyn std::error::Error>> {
-    let url = String::from("ws://") + relay + "/ws";
+    let url = String::from(relay) + "/ws";
     let Ok(mut request) = url.into_client_request() else {
         println!("Error: Failed to create request.");
         return Err("Failed to create request".into());
diff --git a/src/sender/client.rs b/src/sender/client.rs
index 02f0ad6..321de17 100644
--- a/src/sender/client.rs
+++ b/src/sender/client.rs
@@ -1,5 +1,5 @@
 use crate::sender::http_client::send_info;
-use crate::sender::util::hash_random_name;
+use crate::sender::util::{hash_random_name, replace_protocol};
 use crate::shared::{
     packets::{
         list_packet, packet::Value, ChunkPacket, HandshakePacket, HandshakeResponsePacket,
@@ -135,7 +135,7 @@ fn on_create_room(
 
     let send_url = url.to_string();
     let h_name = hash_name.to_string();
-    let server_url = String::from("http://") + relay.as_str();
+    let server_url = replace_protocol(relay.as_str());
     let res = std::thread::spawn(move || {
         tokio::runtime::Builder::new_current_thread()
             .enable_all()
diff --git a/src/sender/mod.rs b/src/sender/mod.rs
index a57d52a..a41c886 100644
--- a/src/sender/mod.rs
+++ b/src/sender/mod.rs
@@ -85,7 +85,7 @@ pub async fn start_sender(relay: Arc<String>, files: Arc<Vec<String>>) {
     });
     let local_thread = task::spawn(async move {
         connect_to_server(
-            Arc::new(String::from("0.0.0.0:9000")),
+            Arc::new(String::from("ws://0.0.0.0:9000")),
             local_files.clone(),
             Some(local_room_id),
             local_relay.clone(),
@@ -146,7 +146,7 @@ async fn connect_to_server(
     tx: mpsc::Sender<()>,
     is_local: bool,
 ) {
-    let url = format!("ws://{}/ws", relay);
+    let url = format!("{}/ws", relay);
     let message_relay = format!("{}", message_server);
     let transfer_name = format!("{}", transfer_name);
     match url.clone().into_client_request() {
diff --git a/src/sender/util.rs b/src/sender/util.rs
index d429a24..d8927b8 100644
--- a/src/sender/util.rs
+++ b/src/sender/util.rs
@@ -32,6 +32,15 @@ pub fn hash_random_name(name: String) -> String {
     hex::encode(hashed_name)
 }
 
+pub fn replace_protocol(address: &str) -> String {
+    let mut result = address.to_string();
+    result = result.replace("ws://", "http://");
+
+    result = result.replace("wss://", "https://");
+
+    result
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;