From a25052f57860c2692a1b31021d8468bf4254c174 Mon Sep 17 00:00:00 2001
From: Pass Automated Testing Suite <Pass-Automated-Testing-Suite@zx2c4.com>
Date: Sun, 17 Oct 2021 12:18:11 +0200
Subject: [PATCH] Add optional axum build configuration and README

---
 Cargo.lock  | 531 ++++++++++++++++++++++++++++++++++++++++++++++++----
 Cargo.toml  |  10 +-
 README.md   |  17 ++
 src/main.rs |  66 ++++++-
 4 files changed, 583 insertions(+), 41 deletions(-)
 create mode 100644 README.md

diff --git a/Cargo.lock b/Cargo.lock
index 0062f24..1340155 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8,7 +8,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f2c11af4b06dc935d8e1b1491dad56bfb32febc49096a91e773f8535c176453"
 dependencies = [
- "bytes",
+ "bytes 0.4.12",
  "futures",
  "log",
  "tokio-codec",
@@ -28,7 +28,7 @@ dependencies = [
  "derive_more",
  "either",
  "futures",
- "http",
+ "http 0.1.21",
  "log",
  "tokio-current-thread",
  "tokio-tcp",
@@ -40,7 +40,11 @@ name = "actix-gcd"
 version = "0.1.0"
 dependencies = [
  "actix-web",
+ "axum",
+ "hyper",
  "serde",
+ "tokio",
+ "tower",
 ]
 
 [[package]]
@@ -58,7 +62,7 @@ dependencies = [
  "base64",
  "bitflags",
  "brotli2",
- "bytes",
+ "bytes 0.4.12",
  "chrono",
  "copyless",
  "derive_more",
@@ -67,9 +71,9 @@ dependencies = [
  "failure",
  "flate2",
  "futures",
- "h2",
+ "h2 0.1.26",
  "hashbrown 0.6.3",
- "http",
+ "http 0.1.21",
  "httparse",
  "indexmap",
  "language-tags",
@@ -81,7 +85,7 @@ dependencies = [
  "regex",
  "serde",
  "serde_json",
- "serde_urlencoded",
+ "serde_urlencoded 0.6.1",
  "sha1",
  "slab",
  "time",
@@ -97,8 +101,8 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "23224bb527e204261d0291102cb9b52713084def67d94f7874923baefe04ccf7"
 dependencies = [
- "bytes",
- "http",
+ "bytes 0.4.12",
+ "http 0.1.21",
  "log",
  "regex",
  "serde",
@@ -131,7 +135,7 @@ dependencies = [
  "actix-service",
  "futures",
  "log",
- "mio",
+ "mio 0.6.23",
  "net2",
  "num_cpus",
  "slab",
@@ -190,7 +194,7 @@ dependencies = [
  "lazy_static",
  "log",
  "num_cpus",
- "parking_lot",
+ "parking_lot 0.9.0",
  "threadpool",
 ]
 
@@ -202,7 +206,7 @@ checksum = "908c3109948f5c37a8b57fd343a37dcad5bb1d90bfd06300ac96b17bbe017b95"
 dependencies = [
  "actix-codec",
  "actix-service",
- "bytes",
+ "bytes 0.4.12",
  "either",
  "futures",
  "log",
@@ -228,7 +232,7 @@ dependencies = [
  "actix-utils",
  "actix-web-codegen",
  "awc",
- "bytes",
+ "bytes 0.4.12",
  "derive_more",
  "encoding_rs",
  "futures",
@@ -236,11 +240,11 @@ dependencies = [
  "log",
  "mime",
  "net2",
- "parking_lot",
+ "parking_lot 0.9.0",
  "regex",
  "serde",
  "serde_json",
- "serde_urlencoded",
+ "serde_urlencoded 0.6.1",
  "time",
  "url 2.2.2",
 ]
@@ -289,6 +293,17 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "async-trait"
+version = "0.1.51"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44318e776df68115a881de9a8fd1b9e53368d7a4a5ce4cc48517da3393233a5e"
+dependencies = [
+ "proc-macro2 1.0.30",
+ "quote 1.0.10",
+ "syn 1.0.80",
+]
+
 [[package]]
 name = "autocfg"
 version = "0.1.7"
@@ -311,7 +326,7 @@ dependencies = [
  "actix-http",
  "actix-service",
  "base64",
- "bytes",
+ "bytes 0.4.12",
  "derive_more",
  "futures",
  "log",
@@ -320,10 +335,37 @@ dependencies = [
  "rand 0.7.3",
  "serde",
  "serde_json",
- "serde_urlencoded",
+ "serde_urlencoded 0.6.1",
  "tokio-timer",
 ]
 
+[[package]]
+name = "axum"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f08f95a202e827209db1491047aa57c18c8adb4c5efcfcfd4a2da4838ee3a72"
+dependencies = [
+ "async-trait",
+ "bitflags",
+ "bytes 1.1.0",
+ "futures-util",
+ "http 0.2.5",
+ "http-body",
+ "hyper",
+ "pin-project-lite",
+ "regex",
+ "serde",
+ "serde_json",
+ "serde_urlencoded 0.7.0",
+ "sync_wrapper",
+ "tokio",
+ "tokio-util",
+ "tower",
+ "tower-http",
+ "tower-layer",
+ "tower-service",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.61"
@@ -390,6 +432,12 @@ dependencies = [
  "iovec",
 ]
 
+[[package]]
+name = "bytes"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
+
 [[package]]
 name = "cc"
 version = "1.0.71"
@@ -609,6 +657,46 @@ version = "0.1.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a471a38ef8ed83cd6e40aa59c1ffe17db6855c18e3604d9c4ed8c08ebc28678"
 
+[[package]]
+name = "futures-channel"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5da6ba8c3bb3c165d3c7319fc1cc8304facf1fb8db99c5de877183c08a273888"
+dependencies = [
+ "futures-core",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88d1c26957f23603395cd326b0ffe64124b818f4449552f960d815cfba83a53d"
+
+[[package]]
+name = "futures-sink"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36ea153c13024fe480590b3e3d4cad89a0cfacecc24577b68f86c6ced9c2bc11"
+
+[[package]]
+name = "futures-task"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d3d00f4eddb73e498a54394f228cd55853bdf059259e8e7bc6e69d408892e99"
+
+[[package]]
+name = "futures-util"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36568465210a3a6ee45e1f165136d68671471a501e632e9a98d96872222b5481"
+dependencies = [
+ "autocfg 1.0.1",
+ "futures-core",
+ "futures-task",
+ "pin-project-lite",
+ "pin-utils",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.1.16"
@@ -644,10 +732,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a5b34c246847f938a410a03c5458c7fee2274436675e76d8b903c08efc29c462"
 dependencies = [
  "byteorder",
- "bytes",
+ "bytes 0.4.12",
  "fnv",
  "futures",
- "http",
+ "http 0.1.21",
  "indexmap",
  "log",
  "slab",
@@ -655,6 +743,25 @@ dependencies = [
  "tokio-io",
 ]
 
+[[package]]
+name = "h2"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c06815895acec637cd6ed6e9662c935b866d20a106f8361892893a7d9234964"
+dependencies = [
+ "bytes 1.1.0",
+ "fnv",
+ "futures-core",
+ "futures-sink",
+ "futures-util",
+ "http 0.2.5",
+ "indexmap",
+ "slab",
+ "tokio",
+ "tokio-util",
+ "tracing",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.6.3"
@@ -697,17 +804,69 @@ version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6ccf5ede3a895d8856620237b2f02972c1bbc78d2965ad7fe8838d4a0ed41f0"
 dependencies = [
- "bytes",
+ "bytes 0.4.12",
+ "fnv",
+ "itoa",
+]
+
+[[package]]
+name = "http"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1323096b05d41827dadeaee54c9981958c0f94e670bc94ed80037d1a7b8b186b"
+dependencies = [
+ "bytes 1.1.0",
  "fnv",
  "itoa",
 ]
 
+[[package]]
+name = "http-body"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "399c583b2979440c60be0821a6199eca73bc3c8dcd9d070d75ac726e2c6186e5"
+dependencies = [
+ "bytes 1.1.0",
+ "http 0.2.5",
+ "pin-project-lite",
+]
+
 [[package]]
 name = "httparse"
 version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "acd94fdbe1d4ff688b67b04eee2e17bd50995534a61539e45adfefb45e5e5503"
 
+[[package]]
+name = "httpdate"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6456b8a6c8f33fee7d958fcd1b60d55b11940a79e63ae87013e6d22e26034440"
+
+[[package]]
+name = "hyper"
+version = "0.14.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15d1cfb9e4f68655fa04c01f59edb405b6074a0f7118ea881e5026e4a1cd8593"
+dependencies = [
+ "bytes 1.1.0",
+ "futures-channel",
+ "futures-core",
+ "futures-util",
+ "h2 0.3.6",
+ "http 0.2.5",
+ "http-body",
+ "httparse",
+ "httpdate",
+ "itoa",
+ "pin-project-lite",
+ "socket2 0.4.2",
+ "tokio",
+ "tower-service",
+ "tracing",
+ "want",
+]
+
 [[package]]
 name = "idna"
 version = "0.1.5"
@@ -740,6 +899,15 @@ dependencies = [
  "hashbrown 0.11.2",
 ]
 
+[[package]]
+name = "instant"
+version = "0.1.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "716d3d89f35ac6a34fd0eed635395f4c3b76fa889338a4632e5231a8684216bd"
+dependencies = [
+ "cfg-if 1.0.0",
+]
+
 [[package]]
 name = "iovec"
 version = "0.1.4"
@@ -755,7 +923,7 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7e2f18aece9709094573a9f24f483c4f65caa4298e2f7ae1b71cc65d853fad7"
 dependencies = [
- "socket2",
+ "socket2 0.3.19",
  "widestring",
  "winapi 0.3.9",
  "winreg",
@@ -810,6 +978,15 @@ dependencies = [
  "scopeguard",
 ]
 
+[[package]]
+name = "lock_api"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712a4d093c9976e24e7dbca41db895dabcbac38eb5f4045393d17a95bdfb1109"
+dependencies = [
+ "scopeguard",
+]
+
 [[package]]
 name = "log"
 version = "0.4.14"
@@ -891,12 +1068,25 @@ dependencies = [
  "kernel32-sys",
  "libc",
  "log",
- "miow",
+ "miow 0.2.2",
  "net2",
  "slab",
  "winapi 0.2.8",
 ]
 
+[[package]]
+name = "mio"
+version = "0.7.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8067b404fe97c70829f082dec8bcf4f71225d7eaea1d8645349cb76fa06205cc"
+dependencies = [
+ "libc",
+ "log",
+ "miow 0.3.7",
+ "ntapi",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "mio-uds"
 version = "0.6.8"
@@ -905,7 +1095,7 @@ checksum = "afcb699eb26d4332647cc848492bbc15eafb26f08d0304550d5aa1f612e066f0"
 dependencies = [
  "iovec",
  "libc",
- "mio",
+ "mio 0.6.23",
 ]
 
 [[package]]
@@ -920,6 +1110,15 @@ dependencies = [
  "ws2_32-sys",
 ]
 
+[[package]]
+name = "miow"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9f1c5b025cda876f66ef43a113f91ebc9f4ccef34843000e0adf6ebbab84e21"
+dependencies = [
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "net2"
 version = "0.2.37"
@@ -931,6 +1130,15 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "ntapi"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f6bb902e437b6d86e03cce10a7e2af662292c5dfef23b65899ea3ac9354ad44"
+dependencies = [
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.44"
@@ -969,17 +1177,34 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "692fcb63b64b1758029e0a96ee63e049ce8c5948587f2f7208df04625e5f6b56"
+
 [[package]]
 name = "parking_lot"
 version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f842b1982eb6c2fe34036a4fbfb06dd185a3f5c8edfaacdf7d1ea10b07de6252"
 dependencies = [
- "lock_api",
- "parking_lot_core",
+ "lock_api 0.3.4",
+ "parking_lot_core 0.6.2",
  "rustc_version",
 ]
 
+[[package]]
+name = "parking_lot"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d17b78036a60663b797adeaee46f5c9dfebb86948d1255007a1d6be0271ff99"
+dependencies = [
+ "instant",
+ "lock_api 0.4.5",
+ "parking_lot_core 0.8.5",
+]
+
 [[package]]
 name = "parking_lot_core"
 version = "0.6.2"
@@ -989,9 +1214,23 @@ dependencies = [
  "cfg-if 0.1.10",
  "cloudabi",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.1.57",
  "rustc_version",
- "smallvec",
+ "smallvec 0.6.14",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d76e8e1493bcac0d2766c42737f34458f1c8c50c0d23bcb24ea953affb273216"
+dependencies = [
+ "cfg-if 1.0.0",
+ "instant",
+ "libc",
+ "redox_syscall 0.2.10",
+ "smallvec 1.7.0",
  "winapi 0.3.9",
 ]
 
@@ -1007,6 +1246,38 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
+[[package]]
+name = "pin-project"
+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "576bc800220cc65dac09e99e97b08b358cfab6e17078de8dc5fee223bd2d0c08"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e8fe8163d14ce7f0cdac2e040116f22eac817edabff0be91e8aff7e9accf389"
+dependencies = [
+ "proc-macro2 1.0.30",
+ "quote 1.0.10",
+ "syn 1.0.80",
+]
+
+[[package]]
+name = "pin-project-lite"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8d31d11c69a6b52a174b42bdc0c30e5e11670f90788b2c471c31c1d17d449443"
+
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.14"
@@ -1223,6 +1494,15 @@ version = "0.1.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "41cc0f7e4d5d4544e8861606a285bb08d3e70712ccc7d2b84d7c0ccfaf4b05ce"
 
+[[package]]
+name = "redox_syscall"
+version = "0.2.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8383f39639269cde97d255a32bdb68c047337295414940c68bdd30c2e13203ff"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "regex"
 version = "1.5.4"
@@ -1335,6 +1615,18 @@ dependencies = [
  "url 2.2.2",
 ]
 
+[[package]]
+name = "serde_urlencoded"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edfa57a7f8d9c1d260a549e7224100f6c43d43f9103e06dd8b4095a9b2b43ce9"
+dependencies = [
+ "form_urlencoded",
+ "itoa",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "sha1"
 version = "0.6.0"
@@ -1365,6 +1657,12 @@ dependencies = [
  "maybe-uninit",
 ]
 
+[[package]]
+name = "smallvec"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ecab6c735a6bb4139c0caafd0cc3635748bbb3acf4550e8138122099251f309"
+
 [[package]]
 name = "socket2"
 version = "0.3.19"
@@ -1376,13 +1674,23 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "socket2"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5dc90fe6c7be1a323296982db1836d1ea9e47b6839496dde9a541bc496df3516"
+dependencies = [
+ "libc",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "string"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d24114bfcceb867ca7f71a0d3fe45d45619ec47a6fbfa98cb14e14250bfa5d6d"
 dependencies = [
- "bytes",
+ "bytes 0.4.12",
 ]
 
 [[package]]
@@ -1407,6 +1715,12 @@ dependencies = [
  "unicode-xid 0.2.2",
 ]
 
+[[package]]
+name = "sync_wrapper"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20518fe4a4c9acf048008599e464deb21beeae3d3578418951a189c235a7a9a8"
+
 [[package]]
 name = "synstructure"
 version = "0.12.6"
@@ -1463,13 +1777,33 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
+[[package]]
+name = "tokio"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2c2416fdedca8443ae44b4527de1ea633af61d8f7169ffa6e72c5b53d24efcc"
+dependencies = [
+ "autocfg 1.0.1",
+ "bytes 1.1.0",
+ "libc",
+ "memchr",
+ "mio 0.7.14",
+ "num_cpus",
+ "once_cell",
+ "parking_lot 0.11.2",
+ "pin-project-lite",
+ "signal-hook-registry",
+ "tokio-macros",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "tokio-codec"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "25b2998660ba0e70d18684de5d06b70b70a3a747469af9dea7618cc59e75976b"
 dependencies = [
- "bytes",
+ "bytes 0.4.12",
  "futures",
  "tokio-io",
 ]
@@ -1500,11 +1834,22 @@ version = "0.1.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57fc868aae093479e3131e3d165c93b1c7474109d13c90ec0dda2a1bbfff0674"
 dependencies = [
- "bytes",
+ "bytes 0.4.12",
  "futures",
  "log",
 ]
 
+[[package]]
+name = "tokio-macros"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2dd85aeaba7b68df939bd357c6afb36c87951be9e80bf9c859f2fc3e9fca0fd"
+dependencies = [
+ "proc-macro2 1.0.30",
+ "quote 1.0.10",
+ "syn 1.0.80",
+]
+
 [[package]]
 name = "tokio-reactor"
 version = "0.1.12"
@@ -1515,9 +1860,9 @@ dependencies = [
  "futures",
  "lazy_static",
  "log",
- "mio",
+ "mio 0.6.23",
  "num_cpus",
- "parking_lot",
+ "parking_lot 0.9.0",
  "slab",
  "tokio-executor",
  "tokio-io",
@@ -1532,7 +1877,7 @@ checksum = "d0c34c6e548f101053321cba3da7cbb87a610b85555884c41b07da2eb91aff12"
 dependencies = [
  "futures",
  "libc",
- "mio",
+ "mio 0.6.23",
  "mio-uds",
  "signal-hook-registry",
  "tokio-executor",
@@ -1557,10 +1902,10 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "98df18ed66e3b72e742f185882a9e201892407957e45fbff8da17ae7a7c51f72"
 dependencies = [
- "bytes",
+ "bytes 0.4.12",
  "futures",
  "iovec",
- "mio",
+ "mio 0.6.23",
  "tokio-io",
  "tokio-reactor",
 ]
@@ -1583,15 +1928,107 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2a0b10e610b39c38b031a2fcab08e4b82f16ece36504988dcbd81dbba650d82"
 dependencies = [
- "bytes",
+ "bytes 0.4.12",
  "futures",
  "log",
- "mio",
+ "mio 0.6.23",
  "tokio-codec",
  "tokio-io",
  "tokio-reactor",
 ]
 
+[[package]]
+name = "tokio-util"
+version = "0.6.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08d3725d3efa29485e87311c5b699de63cde14b00ed4d256b8318aa30ca452cd"
+dependencies = [
+ "bytes 1.1.0",
+ "futures-core",
+ "futures-sink",
+ "log",
+ "pin-project-lite",
+ "tokio",
+]
+
+[[package]]
+name = "tower"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d15a6b60cdff0cb039d81d3b37f8bc3d7e53dca09069aae3ef2502ca4834fe30"
+dependencies = [
+ "futures-core",
+ "futures-util",
+ "pin-project",
+ "pin-project-lite",
+ "tokio",
+ "tokio-util",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
+[[package]]
+name = "tower-http"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b56efe69aa0ad2b5da6b942e57ea9f6fe683b7a314d4ff48662e2c8838de1"
+dependencies = [
+ "bytes 1.1.0",
+ "futures-core",
+ "futures-util",
+ "http 0.2.5",
+ "http-body",
+ "pin-project",
+ "tower-layer",
+ "tower-service",
+]
+
+[[package]]
+name = "tower-layer"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "343bc9466d3fe6b0f960ef45960509f84480bf4fd96f92901afe7ff3df9d3a62"
+
+[[package]]
+name = "tower-service"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "360dfd1d6d30e05fda32ace2c8c70e9c0a9da713275777f5a4dbb8a1893930c6"
+
+[[package]]
+name = "tracing"
+version = "0.1.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "375a639232caf30edfc78e8d89b2d4c375515393e7af7e16f01cd96917fb2105"
+dependencies = [
+ "cfg-if 1.0.0",
+ "log",
+ "pin-project-lite",
+ "tracing-attributes",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-attributes"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f4f480b8f81512e825f337ad51e94c1eb5d3bbdf2b363dcd01e2b19a9ffe3f8e"
+dependencies = [
+ "proc-macro2 1.0.30",
+ "quote 1.0.10",
+ "syn 1.0.80",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f4ed65637b8390770814083d20756f87bfa2c21bf2f110babdc5438351746e4"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "trust-dns-proto"
 version = "0.7.4"
@@ -1606,8 +2043,8 @@ dependencies = [
  "lazy_static",
  "log",
  "rand 0.6.5",
- "smallvec",
- "socket2",
+ "smallvec 0.6.14",
+ "socket2 0.3.19",
  "tokio-executor",
  "tokio-io",
  "tokio-reactor",
@@ -1631,11 +2068,17 @@ dependencies = [
  "log",
  "lru-cache",
  "resolv-conf",
- "smallvec",
+ "smallvec 0.6.14",
  "tokio-executor",
  "trust-dns-proto",
 ]
 
+[[package]]
+name = "try-lock"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
+
 [[package]]
 name = "unicode-bidi"
 version = "0.3.7"
@@ -1686,6 +2129,16 @@ dependencies = [
  "percent-encoding 2.1.0",
 ]
 
+[[package]]
+name = "want"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ce8a968cb1cd110d136ff8b819a556d6fb6d919363c61534f6860c7eb172ba0"
+dependencies = [
+ "log",
+ "try-lock",
+]
+
 [[package]]
 name = "wasi"
 version = "0.9.0+wasi-snapshot-preview1"
diff --git a/Cargo.toml b/Cargo.toml
index a8fe024..9f984f3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,5 +6,13 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-actix-web = "1.0.8"
 serde = { version = "1.0", features = ["derive"] }
+
+[target.'cfg(axum)'.dependencies]
+axum = "0.2.8"
+hyper = { version = "0.14.13", features = ["full"] }
+tokio = { version = "1.12.0", features = ["full"] }
+tower = "0.4.9"
+
+[target.'cfg(actix)'.dependencies]
+actix-web = "1"
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..8cfe285
--- /dev/null
+++ b/README.md
@@ -0,0 +1,17 @@
+# GCD Calculator using Actix Web OR axum
+
+Was built as a learning exercise to create small web apps from different web framework in the same module thanks to the `cfg` macro.
+Dependencies are also framework specific.
+
+## Usage
+Run in localhost using:
+```
+RUSTFLAGS="--cfg=<actix|axum>" cargo run
+```
+
+## Downsides
+You have to prepend the `RUSTFLAGS` env anytime.
+Using neovim and rust-analyzer, linting is disabled and it becomes a pain to debug.
+
+## Credits
+The gcd and actix specific functions are based on *Programming Rust, 2nd Edition* by Jim Blandy, Jason Orendorff, Leonora F.S. Tindall
diff --git a/src/main.rs b/src/main.rs
index ea248c2..dd41841 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,12 +1,34 @@
+#[cfg(axum)]
+use axum::{extract::Form, handler::get, response::Html, Router};
+#[cfg(axum)]
+use hyper::StatusCode;
+#[cfg(axum)]
+use std::net::SocketAddr;
+
+#[cfg(actix)]
 use actix_web::{web, App, HttpResponse, HttpServer};
+
 use serde::Deserialize;
 
-#[derive(Deserialize)]
+#[derive(Deserialize, Debug)]
 struct GcdParameters {
     n: u64,
     m: u64,
 }
 
+#[cfg(axum)]
+#[tokio::main]
+async fn main() {
+    let app = Router::new().route("/", get(get_index).post(post_gcd));
+
+    let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
+    axum::Server::bind(&addr)
+        .serve(app.into_make_service())
+        .await
+        .expect("error running server");
+}
+
+#[cfg(actix)]
 fn main() {
     let server = HttpServer::new(|| {
         App::new()
@@ -21,6 +43,28 @@ fn main() {
         .expect("error running server");
 }
 
+#[cfg(axum)]
+async fn get_index() -> Html<&'static str> {
+    Html(
+        r#"
+        <!doctype html>
+        <html>
+            <head>
+                <title>GCD Calculator</title>
+            </head>
+            <body>
+                <form action"/gcd" method="post">
+                    <input type="text" name="n" />
+                    <input type="text" name="m" />
+                    <button type="submit">Compute GCD</button>
+                </form>
+            </body>
+        </html>
+        "#,
+    )
+}
+
+#[cfg(actix)]
 fn get_index() -> HttpResponse {
     HttpResponse::Ok().content_type("text/html").body(
         r#"
@@ -34,6 +78,26 @@ fn get_index() -> HttpResponse {
     )
 }
 
+#[cfg(axum)]
+async fn post_gcd(
+    Form(input): Form<GcdParameters>,
+) -> Result<Html<String>, (StatusCode, &'static str)> {
+    if input.n == 0 || input.m == 0 {
+        return Err((
+            StatusCode::BAD_REQUEST,
+            "Computing the GCD with zero is boring",
+        ));
+    }
+    let response = format!(
+        "The greatest common divisor of the numbers {} and {} is <b>{}</b>.",
+        input.n,
+        input.m,
+        gcd(input.n, input.m)
+    );
+    Ok(Html(response))
+}
+
+#[cfg(actix)]
 fn post_gcd(form: web::Form<GcdParameters>) -> HttpResponse {
     if form.n == 0 || form.m == 0 {
         return HttpResponse::BadRequest()
-- 
2.20.1