From b39e88107af02b1df65997030b0fe47e496aa8c6 Mon Sep 17 00:00:00 2001
From: Patryk Hegenberg <patrykhegenberg@gmail.com>
Date: Sun, 5 May 2024 13:42:11 +0200
Subject: [PATCH] refactor(caesar): restructure the project to a monorepo

---
 Cargo.lock                                    | 160 ++++++++++--------
 Cargo.toml                                    |  59 +------
 Shuttle.toml                                  |   1 +
 caesar-cli/Cargo.toml                         |  23 +++
 {src => caesar-cli/src}/cli/args.rs           |   6 +-
 {src => caesar-cli/src}/cli/mod.rs            |   0
 {src => caesar-cli/src}/main.rs               |   6 +-
 caesar-core/Cargo.toml                        |  45 +++++
 packets.proto => caesar-core/packets.proto    |   0
 {src => caesar-core/src}/build.rs             |   0
 caesar-core/src/lib.rs                        |   4 +
 {src => caesar-core/src}/receiver/client.rs   |   0
 .../src}/receiver/http_client.rs              |   0
 {src => caesar-core/src}/receiver/mod.rs      |   0
 {src => caesar-core/src}/relay/appstate.rs    |   0
 {src => caesar-core/src}/relay/client.rs      |   0
 {src => caesar-core/src}/relay/mod.rs         |   0
 {src => caesar-core/src}/relay/room.rs        |   0
 {src => caesar-core/src}/relay/server.rs      |   0
 {src => caesar-core/src}/relay/transfer.rs    |   0
 {src => caesar-core/src}/sender/client.rs     |   0
 .../src}/sender/http_client.rs                |   0
 {src => caesar-core/src}/sender/mod.rs        |   0
 {src => caesar-core/src}/sender/util.rs       |   0
 {src => caesar-core/src}/shared.rs            |   0
 caesar-shuttle/Cargo.toml                     |  18 ++
 src/shuttle.rs => caesar-shuttle/src/main.rs  |  15 +-
 27 files changed, 195 insertions(+), 142 deletions(-)
 create mode 100644 Shuttle.toml
 create mode 100644 caesar-cli/Cargo.toml
 rename {src => caesar-cli/src}/cli/args.rs (99%)
 rename {src => caesar-cli/src}/cli/mod.rs (100%)
 rename {src => caesar-cli/src}/main.rs (93%)
 create mode 100644 caesar-core/Cargo.toml
 rename packets.proto => caesar-core/packets.proto (100%)
 rename {src => caesar-core/src}/build.rs (100%)
 create mode 100644 caesar-core/src/lib.rs
 rename {src => caesar-core/src}/receiver/client.rs (100%)
 rename {src => caesar-core/src}/receiver/http_client.rs (100%)
 rename {src => caesar-core/src}/receiver/mod.rs (100%)
 rename {src => caesar-core/src}/relay/appstate.rs (100%)
 rename {src => caesar-core/src}/relay/client.rs (100%)
 rename {src => caesar-core/src}/relay/mod.rs (100%)
 rename {src => caesar-core/src}/relay/room.rs (100%)
 rename {src => caesar-core/src}/relay/server.rs (100%)
 rename {src => caesar-core/src}/relay/transfer.rs (100%)
 rename {src => caesar-core/src}/sender/client.rs (100%)
 rename {src => caesar-core/src}/sender/http_client.rs (100%)
 rename {src => caesar-core/src}/sender/mod.rs (100%)
 rename {src => caesar-core/src}/sender/util.rs (100%)
 rename {src => caesar-core/src}/shared.rs (100%)
 create mode 100644 caesar-shuttle/Cargo.toml
 rename src/shuttle.rs => caesar-shuttle/src/main.rs (71%)

diff --git a/Cargo.lock b/Cargo.lock
index 6430aa9..8b7a390 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -87,47 +87,48 @@ dependencies = [
 
 [[package]]
 name = "anstream"
-version = "0.6.13"
+version = "0.6.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d96bd03f33fe50a863e394ee9718a706f988b9079b20c3784fb726e7678b62fb"
+checksum = "418c75fa768af9c03be99d17643f93f79bbba589895012a80e3452a19ddda15b"
 dependencies = [
  "anstyle",
  "anstyle-parse",
  "anstyle-query",
  "anstyle-wincon",
  "colorchoice",
+ "is_terminal_polyfill",
  "utf8parse",
 ]
 
 [[package]]
 name = "anstyle"
-version = "1.0.6"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8901269c6307e8d93993578286ac0edf7f195079ffff5ebdeea6a59ffb7e36bc"
+checksum = "038dfcf04a5feb68e9c60b21c9625a54c2c0616e79b72b0fd87075a056ae1d1b"
 
 [[package]]
 name = "anstyle-parse"
-version = "0.2.3"
+version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c75ac65da39e5fe5ab759307499ddad880d724eed2f6ce5b5e8a26f4f387928c"
+checksum = "c03a11a9034d92058ceb6ee011ce58af4a9bf61491aa7e1e59ecd24bd40d22d4"
 dependencies = [
  "utf8parse",
 ]
 
 [[package]]
 name = "anstyle-query"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e28923312444cdd728e4738b3f9c9cac739500909bb3d3c94b43551b16517648"
+checksum = "a64c907d4e79225ac72e2a354c9ce84d50ebb4586dee56c82b3ee73004f537f5"
 dependencies = [
  "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "anstyle-wincon"
-version = "3.0.2"
+version = "3.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cd54b81ec8d6180e24654d0b371ad22fc3dd083b6ff8ba325b72e00c87660a7"
+checksum = "61a38449feb7068f52bb06c12759005cf459ee52bb4adc1d5a7c4322d716fb19"
 dependencies = [
  "anstyle",
  "windows-sys 0.52.0",
@@ -185,9 +186,9 @@ dependencies = [
 
 [[package]]
 name = "autocfg"
-version = "1.2.0"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1fdabc7756949593fe60f30ec81974b613357de856987752631dea1e3394c80"
+checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
 
 [[package]]
 name = "axum"
@@ -355,9 +356,9 @@ checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
 
 [[package]]
 name = "base64"
-version = "0.22.0"
+version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9475866fec1451be56a3c2400fd081ff546538961565ccb5b7142cbd22bc7a51"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
 [[package]]
 name = "base64ct"
@@ -405,17 +406,32 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "514de17de45fdb8dc022b1a7975556c53c86f9f0aa5f534b98977b171857c2c9"
 
 [[package]]
-name = "caesar-transfer-iu"
+name = "caesar-cli"
+version = "0.3.1"
+dependencies = [
+ "axum 0.7.5",
+ "axum-client-ip",
+ "caesar-core",
+ "clap 4.5.4",
+ "dotenv",
+ "serde",
+ "serde_json",
+ "tokio",
+ "tracing",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "caesar-core"
 version = "0.3.1"
 dependencies = [
  "aes-gcm",
  "axum 0.7.5",
  "axum-client-ip",
  "axum-extra",
- "base64 0.22.0",
+ "base64 0.22.1",
  "clap 4.5.4",
  "dotenv",
- "dotenvy",
  "flume",
  "futures-util",
  "headers",
@@ -433,8 +449,6 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2",
- "shuttle-axum",
- "shuttle-runtime",
  "tokio",
  "tokio-tungstenite",
  "tower",
@@ -446,11 +460,22 @@ dependencies = [
  "uuid",
 ]
 
+[[package]]
+name = "caesar-transfer-iu"
+version = "0.3.1"
+dependencies = [
+ "axum 0.7.5",
+ "axum-client-ip",
+ "caesar-core",
+ "shuttle-axum",
+ "shuttle-runtime",
+]
+
 [[package]]
 name = "cc"
-version = "1.0.95"
+version = "1.0.96"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d32a725bc159af97c3e629873bb9f88fb8cf8a4867175f76dc987815ea07c83b"
+checksum = "065a29261d53ba54260972629f9ca6bffa69bac13cd1fed61420f7fa68b9f8bd"
 
 [[package]]
 name = "cfg-if"
@@ -544,9 +569,9 @@ checksum = "98cc8fbded0c607b7ba9dd60cd98df59af97e84d24e49c8557331cfc26d301ce"
 
 [[package]]
 name = "colorchoice"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
+checksum = "0b6a852b24ab71dffc585bcb46eaf7959d175cb865a7152e35b348d1b2960422"
 
 [[package]]
 name = "colored"
@@ -707,9 +732,9 @@ dependencies = [
 
 [[package]]
 name = "data-encoding"
-version = "2.5.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e962a19be5cfc3f3bf6dd8f61eb50107f356ad6270fbb3ed41476571db78be5"
+checksum = "e8566979429cf69b49a5c740c60791108e86440e8be149bbea4fe54d2c32d6e2"
 
 [[package]]
 name = "der"
@@ -743,12 +768,6 @@ dependencies = [
  "clap 2.34.0",
 ]
 
-[[package]]
-name = "dotenvy"
-version = "0.15.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1aaf95b3e5c8f23aa320147307562d361db0ae0d51242340f558153b4eb2439b"
-
 [[package]]
 name = "ecdsa"
 version = "0.16.9"
@@ -817,9 +836,9 @@ dependencies = [
 
 [[package]]
 name = "fastrand"
-version = "2.0.2"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "658bd65b1cf4c852a3cc96f18a8ce7b5640f6b703f905c7d74532294c2a63984"
+checksum = "9fc0510504f03c51ada170672ac806f1f105a88aa97a5281117e1ddc3368e51a"
 
 [[package]]
 name = "ff"
@@ -1064,9 +1083,9 @@ checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
 [[package]]
 name = "hashbrown"
-version = "0.14.3"
+version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
+checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
 
 [[package]]
 name = "headers"
@@ -1201,9 +1220,9 @@ dependencies = [
 
 [[package]]
 name = "http-range-header"
-version = "0.4.0"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ce4ef31cda248bbdb6e6820603b82dfcd9e833db65a43e997a0ccec777d11fe"
+checksum = "08a397c49fec283e3d6211adbe480be95aae5f304cfb923e9970e08956d5168a"
 
 [[package]]
 name = "httparse"
@@ -1360,7 +1379,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
 dependencies = [
  "equivalent",
- "hashbrown 0.14.3",
+ "hashbrown 0.14.5",
 ]
 
 [[package]]
@@ -1379,10 +1398,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f518f335dce6725a761382244631d86cf0ccb2863413590b31338feb467f9c3"
 
 [[package]]
-name = "itertools"
-version = "0.10.5"
+name = "is_terminal_polyfill"
+version = "1.70.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+checksum = "f8478577c03552c21db0e2724ffb8986a5ce7af88107e6be5d2ee6e158c12800"
+
+[[package]]
+name = "itertools"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba291022dbbd398a455acf126c1e341954079855bc60dfdda641363bd6922569"
 dependencies = [
  "either",
 ]
@@ -1410,9 +1435,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.153"
+version = "0.2.154"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
+checksum = "ae743338b92ff9146ce83992f766a31066a91a8c84a45e0e9f21e7cf6de6d346"
 
 [[package]]
 name = "linux-raw-sys"
@@ -1434,9 +1459,9 @@ dependencies = [
 
 [[package]]
 name = "lock_api"
-version = "0.4.11"
+version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c168f8615b12bc01f9c17e2eb0cc07dcae1940121185446edc3744920e8ef45"
+checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17"
 dependencies = [
  "autocfg",
  "scopeguard",
@@ -1582,9 +1607,9 @@ dependencies = [
 
 [[package]]
 name = "num-traits"
-version = "0.2.18"
+version = "0.2.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da0df0e5185db44f69b44f26786fe401b6c293d1907744beaa7fa62b2e5a517a"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
 ]
@@ -1741,9 +1766,9 @@ dependencies = [
 
 [[package]]
 name = "parking_lot"
-version = "0.12.1"
+version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
+checksum = "7e4af0ca4f6caed20e900d564c242b8e5d4903fdacf31d3daf527b66fe6f42fb"
 dependencies = [
  "lock_api",
  "parking_lot_core",
@@ -1751,15 +1776,15 @@ dependencies = [
 
 [[package]]
 name = "parking_lot_core"
-version = "0.9.9"
+version = "0.9.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c42a9226546d68acdd9c0a280d17ce19bfe27a46bf68784e4066115788d008e"
+checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8"
 dependencies = [
  "cfg-if",
  "libc",
  "redox_syscall",
  "smallvec",
- "windows-targets 0.48.5",
+ "windows-targets 0.52.5",
 ]
 
 [[package]]
@@ -2018,11 +2043,11 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.4.1"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4722d768eff46b75989dd134e5c353f0d6296e5aaa3132e776cbdb56be7731aa"
+checksum = "469052894dcb553421e483e4209ee581a45100d31b4018de03e5a7ad86374a7e"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.5.0",
 ]
 
 [[package]]
@@ -2075,7 +2100,7 @@ version = "0.12.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "566cafdd92868e0939d3fb961bd0dc25fcfaaed179291093b3d43e6b3150ea10"
 dependencies = [
- "base64 0.22.0",
+ "base64 0.22.1",
  "bytes",
  "encoding_rs",
  "futures-channel",
@@ -2176,7 +2201,7 @@ version = "2.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "29993a25686778eb88d4189742cd713c9bce943bc54251a33509dc63cbacf73d"
 dependencies = [
- "base64 0.22.0",
+ "base64 0.22.1",
  "rustls-pki-types",
 ]
 
@@ -2282,18 +2307,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.198"
+version = "1.0.200"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9846a40c979031340571da2545a4e5b7c4163bdae79b301d5f86d03979451fcc"
+checksum = "ddc6f9cc94d67c0e21aaf7eda3a010fd3af78ebf6e096aa6e2e13c79749cce4f"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.198"
+version = "1.0.200"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e88edab869b01783ba905e7d0153f9fc1a6505a96e4ad3018011eedb838566d9"
+checksum = "856f046b9400cee3c8c94ed572ecdb752444c24528c035cd35882aad6f492bcb"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2519,9 +2544,9 @@ checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67"
 
 [[package]]
 name = "socket2"
-version = "0.5.6"
+version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05ffd9c0a93b7543e062e759284fcf5f5e3b098501104bfbdde4d404db792871"
+checksum = "ce305eb0b4296696835b71df73eb912e0f1ffd2556a501fcede6e0c50349191c"
 dependencies = [
  "libc",
  "windows-sys 0.52.0",
@@ -2822,16 +2847,15 @@ dependencies = [
 
 [[package]]
 name = "tokio-util"
-version = "0.7.10"
+version = "0.7.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5419f34732d9eb6ee4c3578b7989078579b7f039cbbb9ca2c4da015749371e15"
+checksum = "9cf6b47b3771c49ac75ad09a6162f53ad4b8088b76ac60e8ec1455b31a189fe1"
 dependencies = [
  "bytes",
  "futures-core",
  "futures-sink",
  "pin-project-lite",
  "tokio",
- "tracing",
 ]
 
 [[package]]
@@ -3076,9 +3100,9 @@ dependencies = [
 
 [[package]]
 name = "unicode-width"
-version = "0.1.11"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e51733f11c9c4f72aa0c160008246859e340b00807569a0da0e7a1079b27ba85"
+checksum = "68f5e5f3158ecfd4b8ff6fe086db7c8467a2dfdac97fe420f2b7c4aa97af66d6"
 
 [[package]]
 name = "universal-hash"
diff --git a/Cargo.toml b/Cargo.toml
index 8e8903b..0b8453c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,56 +1,3 @@
-[package]
-name = "caesar-transfer-iu"
-version = "0.3.1"
-edition = "2021"
-build = "src/build.rs"
-authors = ["Manuel Keidel", "Patryk Hegenberg", "Krzysztof Stankiewicz"]
-
-[[bin]]
-name = "caesar"
-path = "src/main.rs"
-
-[[bin]]
-name = "caesar-transfer-iu"
-path = "src/shuttle.rs"
-
-[dependencies]
-futures-util = "0.3"
-tungstenite = "0.21.0"
-tokio = { version = "1.28.1", features = ["full"] }
-tokio-tungstenite = { version = "0.21.0", features = [
-  "rustls-tls-webpki-roots",
-] }
-serde_json = { version = "1.0" }
-serde = { version = "1.0", features = ["derive"] }
-uuid = { version = "1.3.2", features = ["v4"] }
-tracing = "0.1.40"
-tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
-dotenv = { version = "0.15.0", features = ["clap", "cli"] }
-clap = { version = "4.5.4", features = ["derive"] }
-flume = { git = "https://github.com/zesterer/flume", rev = "80d19c49" }
-prost = "0.12.4"
-prost-types = "0.12.4"
-base64 = "0.22.0"
-url = "2.4.0"
-p256 = { version = "0.13.2", features = ["ecdh"] }
-hmac = "0.12.1"
-sha2 = "0.10.7"
-rand = { version = "0.8.5", features = ["getrandom"] }
-aes-gcm = "0.10.3"
-sanitize-filename = "0.5.0"
-qr2term = "0.3.1"
-axum = { version = "0.7.5", features = ["ws"] }
-tower-http = { version = "0.5.2", features = ["fs", "trace"] }
-axum-client-ip = "0.6.0"
-local-ip-address = "0.6.1"
-axum-extra = { version = "0.9.3", features = ["typed-header"] }
-headers = "0.4"
-tower = { version = "0.4", features = ["util"] }
-shuttle-axum = { version = "0.44.0" }
-shuttle-runtime = { version = "0.44.0" }
-dotenvy = "0.15.7"
-reqwest = { version = "0.12.4", features = ["blocking", "json"] }
-hex = "0.4.3"
-
-[build-dependencies]
-prost-build = "0.12.4"
+[workspace]
+resolver = "2"
+members = ["caesar-cli", "caesar-core", "caesar-shuttle"]
diff --git a/Shuttle.toml b/Shuttle.toml
new file mode 100644
index 0000000..be6938b
--- /dev/null
+++ b/Shuttle.toml
@@ -0,0 +1 @@
+name = "caesar-transfer-iu"
diff --git a/caesar-cli/Cargo.toml b/caesar-cli/Cargo.toml
new file mode 100644
index 0000000..c9bbef7
--- /dev/null
+++ b/caesar-cli/Cargo.toml
@@ -0,0 +1,23 @@
+[package]
+name = "caesar-cli"
+version = "0.3.1"
+edition = "2021"
+authors = ["Manuel Keidel, Patryk Hegenberg, Krzysztof Stankiewicz"]
+
+[[bin]]
+name = "caesar"
+path = "src/main.rs"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+caesar-core = { path = "../caesar-core" }
+tokio = { version = "1.28.1", features = ["full"] }
+serde_json = { version = "1.0" }
+serde = { version = "1.0", features = ["derive"] }
+tracing = "0.1.40"
+tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
+dotenv = { version = "0.15.0", features = ["clap", "cli"] }
+clap = { version = "4.5.4", features = ["derive"] }
+axum = { version = "0.7.5", features = ["ws"] }
+axum-client-ip = "0.6.0"
diff --git a/src/cli/args.rs b/caesar-cli/src/cli/args.rs
similarity index 99%
rename from src/cli/args.rs
rename to caesar-cli/src/cli/args.rs
index c377826..e8cdf45 100644
--- a/src/cli/args.rs
+++ b/caesar-cli/src/cli/args.rs
@@ -1,6 +1,6 @@
-use crate::receiver;
-use crate::relay;
-use crate::sender;
+use caesar_core::receiver;
+use caesar_core::relay;
+use caesar_core::sender;
 use clap::{Parser, Subcommand};
 use std::{env, sync::Arc};
 use tracing::debug;
diff --git a/src/cli/mod.rs b/caesar-cli/src/cli/mod.rs
similarity index 100%
rename from src/cli/mod.rs
rename to caesar-cli/src/cli/mod.rs
diff --git a/src/main.rs b/caesar-cli/src/main.rs
similarity index 93%
rename from src/main.rs
rename to caesar-cli/src/main.rs
index d678bd7..d7e56fc 100644
--- a/src/main.rs
+++ b/caesar-cli/src/main.rs
@@ -3,11 +3,7 @@ use dotenv::dotenv;
 use tracing::error;
 use tracing_subscriber::filter::EnvFilter;
 
-pub mod cli;
-pub mod receiver;
-pub mod relay;
-pub mod sender;
-pub mod shared;
+mod cli;
 
 #[tokio::main]
 // This is the entrypoint of caesar.
diff --git a/caesar-core/Cargo.toml b/caesar-core/Cargo.toml
new file mode 100644
index 0000000..2b38875
--- /dev/null
+++ b/caesar-core/Cargo.toml
@@ -0,0 +1,45 @@
+[package]
+name = "caesar-core"
+version = "0.3.1"
+edition = "2021"
+build = "src/build.rs"
+authors = ["Manuel Keidel", "Patryk Hegenberg", "Krzysztof Stankiewicz"]
+
+[dependencies]
+futures-util = "0.3"
+tungstenite = "0.21.0"
+tokio = { version = "1.28.1", features = ["full"] }
+tokio-tungstenite = { version = "0.21.0", features = [
+  "rustls-tls-webpki-roots",
+] }
+serde_json = { version = "1.0" }
+serde = { version = "1.0", features = ["derive"] }
+uuid = { version = "1.3.2", features = ["v4"] }
+tracing = "0.1.40"
+tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
+dotenv = { version = "0.15.0", features = ["clap", "cli"] }
+clap = { version = "4.5.4", features = ["derive"] }
+flume = { git = "https://github.com/zesterer/flume", rev = "80d19c49" }
+prost = "0.12.4"
+prost-types = "0.12.4"
+base64 = "0.22.0"
+url = "2.4.0"
+p256 = { version = "0.13.2", features = ["ecdh"] }
+hmac = "0.12.1"
+sha2 = "0.10.7"
+rand = { version = "0.8.5", features = ["getrandom"] }
+aes-gcm = "0.10.3"
+sanitize-filename = "0.5.0"
+qr2term = "0.3.1"
+axum = { version = "0.7.5", features = ["ws"] }
+tower-http = { version = "0.5.2", features = ["fs", "trace"] }
+axum-client-ip = "0.6.0"
+local-ip-address = "0.6.1"
+axum-extra = { version = "0.9.3", features = ["typed-header"] }
+headers = "0.4"
+tower = { version = "0.4", features = ["util"] }
+reqwest = { version = "0.12.4", features = ["blocking", "json"] }
+hex = "0.4.3"
+
+[build-dependencies]
+prost-build = "0.12.4"
diff --git a/packets.proto b/caesar-core/packets.proto
similarity index 100%
rename from packets.proto
rename to caesar-core/packets.proto
diff --git a/src/build.rs b/caesar-core/src/build.rs
similarity index 100%
rename from src/build.rs
rename to caesar-core/src/build.rs
diff --git a/caesar-core/src/lib.rs b/caesar-core/src/lib.rs
new file mode 100644
index 0000000..010a530
--- /dev/null
+++ b/caesar-core/src/lib.rs
@@ -0,0 +1,4 @@
+pub mod receiver;
+pub mod relay;
+pub mod sender;
+pub mod shared;
diff --git a/src/receiver/client.rs b/caesar-core/src/receiver/client.rs
similarity index 100%
rename from src/receiver/client.rs
rename to caesar-core/src/receiver/client.rs
diff --git a/src/receiver/http_client.rs b/caesar-core/src/receiver/http_client.rs
similarity index 100%
rename from src/receiver/http_client.rs
rename to caesar-core/src/receiver/http_client.rs
diff --git a/src/receiver/mod.rs b/caesar-core/src/receiver/mod.rs
similarity index 100%
rename from src/receiver/mod.rs
rename to caesar-core/src/receiver/mod.rs
diff --git a/src/relay/appstate.rs b/caesar-core/src/relay/appstate.rs
similarity index 100%
rename from src/relay/appstate.rs
rename to caesar-core/src/relay/appstate.rs
diff --git a/src/relay/client.rs b/caesar-core/src/relay/client.rs
similarity index 100%
rename from src/relay/client.rs
rename to caesar-core/src/relay/client.rs
diff --git a/src/relay/mod.rs b/caesar-core/src/relay/mod.rs
similarity index 100%
rename from src/relay/mod.rs
rename to caesar-core/src/relay/mod.rs
diff --git a/src/relay/room.rs b/caesar-core/src/relay/room.rs
similarity index 100%
rename from src/relay/room.rs
rename to caesar-core/src/relay/room.rs
diff --git a/src/relay/server.rs b/caesar-core/src/relay/server.rs
similarity index 100%
rename from src/relay/server.rs
rename to caesar-core/src/relay/server.rs
diff --git a/src/relay/transfer.rs b/caesar-core/src/relay/transfer.rs
similarity index 100%
rename from src/relay/transfer.rs
rename to caesar-core/src/relay/transfer.rs
diff --git a/src/sender/client.rs b/caesar-core/src/sender/client.rs
similarity index 100%
rename from src/sender/client.rs
rename to caesar-core/src/sender/client.rs
diff --git a/src/sender/http_client.rs b/caesar-core/src/sender/http_client.rs
similarity index 100%
rename from src/sender/http_client.rs
rename to caesar-core/src/sender/http_client.rs
diff --git a/src/sender/mod.rs b/caesar-core/src/sender/mod.rs
similarity index 100%
rename from src/sender/mod.rs
rename to caesar-core/src/sender/mod.rs
diff --git a/src/sender/util.rs b/caesar-core/src/sender/util.rs
similarity index 100%
rename from src/sender/util.rs
rename to caesar-core/src/sender/util.rs
diff --git a/src/shared.rs b/caesar-core/src/shared.rs
similarity index 100%
rename from src/shared.rs
rename to caesar-core/src/shared.rs
diff --git a/caesar-shuttle/Cargo.toml b/caesar-shuttle/Cargo.toml
new file mode 100644
index 0000000..c12b579
--- /dev/null
+++ b/caesar-shuttle/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "caesar-transfer-iu"
+version = "0.3.1"
+edition = "2021"
+authors = ["Manuel Keidel, Patryk Hegenberg, Krzysztof Stankiewicz"]
+
+[[bin]]
+name = "caesar-transfer-iu"
+path = "src/main.rs"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+caesar-core = { path = "../caesar-core" }
+shuttle-axum = { version = "0.44.0" }
+shuttle-runtime = { version = "0.44.0" }
+axum = { version = "0.7.5", features = ["ws"] }
+axum-client-ip = "0.6.0"
diff --git a/src/shuttle.rs b/caesar-shuttle/src/main.rs
similarity index 71%
rename from src/shuttle.rs
rename to caesar-shuttle/src/main.rs
index 817b15d..63241e1 100644
--- a/src/shuttle.rs
+++ b/caesar-shuttle/src/main.rs
@@ -1,20 +1,15 @@
-use crate::relay::appstate::AppState;
-use crate::relay::server::download_info;
-use crate::relay::server::download_success;
-use crate::relay::server::upload_info;
-use crate::relay::server::ws_handler;
 use axum::{
     routing::{get, post, put},
     Router,
 };
 use axum_client_ip::SecureClientIpSource;
+use caesar_core::relay::appstate::AppState;
+use caesar_core::relay::server::download_info;
+use caesar_core::relay::server::download_success;
+use caesar_core::relay::server::upload_info;
+use caesar_core::relay::server::ws_handler;
 use shuttle_axum::ShuttleAxum;
 
-pub mod receiver;
-pub mod relay;
-pub mod sender;
-pub mod shared;
-
 #[shuttle_runtime::main]
 async fn axum() -> ShuttleAxum {
     // Create a new server data structure.