├── .gitattributes
├── .gitignore
├── codecrafters.yml
├── your_server.sh
├── README.md
├── Cargo.toml
├── src
    └── main.rs
└── Cargo.lock


/.gitattributes:
--------------------------------------------------------------------------------
1 | * text=auto
2 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # Generated by Cargo
 2 | # will have compiled files and executables
 3 | debug/
 4 | target/
 5 | 
 6 | # These are backup files generated by rustfmt
 7 | **/*.rs.bk
 8 | 
 9 | # MSVC Windows builds of rustc generate these, which store debugging information
10 | *.pdb
11 | 


--------------------------------------------------------------------------------
/codecrafters.yml:
--------------------------------------------------------------------------------
 1 | # Set this to true if you want debug logs.
 2 | #
 3 | # These can be VERY verbose, so we suggest turning them off
 4 | # unless you really need them.
 5 | debug: false
 6 | 
 7 | # Use this to change the Rust version used to run your code
 8 | # on Codecrafters.
 9 | #
10 | # Available versions: rust-1.70
11 | language_pack: rust-1.70
12 | 


--------------------------------------------------------------------------------
/your_server.sh:
--------------------------------------------------------------------------------
 1 | #!/bin/sh
 2 | #
 3 | # DON'T EDIT THIS!
 4 | #
 5 | # CodeCrafters uses this file to test your code. Don't make any changes here!
 6 | #
 7 | # DON'T EDIT THIS!
 8 | exec cargo run \
 9 |     --quiet \
10 |     --release \
11 |     --target-dir=/tmp/codecrafters-http-server-target \
12 |     --manifest-path $(dirname $0)/Cargo.toml -- "$@"
13 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | [![progress-banner](https://backend.codecrafters.io/progress/http-server/826cd895-6426-46f6-9ad8-2b0abb52b8d6)](https://app.codecrafters.io/users/codecrafters-bot?r=2qF)
 2 | 
 3 | This is a starting point for Rust solutions to the
 4 | ["Build Your Own HTTP server" Challenge](https://app.codecrafters.io/courses/http-server/overview).
 5 | 
 6 | [HTTP](https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol) is the
 7 | protocol that powers the web. In this challenge, you'll build a HTTP/1.1 server
 8 | that is capable of serving multiple clients.
 9 | 
10 | Along the way you'll learn about TCP servers,
11 | [HTTP request syntax](https://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html),
12 | and more.
13 | 
14 | **Note**: If you're viewing this repo on GitHub, head over to
15 | [codecrafters.io](https://codecrafters.io) to try the challenge.
16 | 
17 | # Note
18 | 
19 | This is a complete solution to the codecrafters challenge but is definitely not ready for use in production. The code is also neither `clean` or the most `idiomatic rust`. Use at your own risk.
20 | 


--------------------------------------------------------------------------------
/Cargo.toml:
--------------------------------------------------------------------------------
 1 | # DON'T EDIT THIS!
 2 | #
 3 | # Codecrafters relies on this file being intact to run tests successfully. Any changes
 4 | # here will not reflect when CodeCrafters tests your code, and might even cause build
 5 | # failures.
 6 | #
 7 | # DON'T EDIT THIS!
 8 | [package]
 9 | name = "http-server-starter-rust"
10 | version = "0.1.0"
11 | authors = ["Codecrafters <hello@codecrafters.io>"]
12 | edition = "2021"
13 | 
14 | # DON'T EDIT THIS!
15 | #
16 | # Codecrafters relies on this file being intact to run tests successfully. Any changes
17 | # here will not reflect when CodeCrafters tests your code, and might even cause build
18 | # failures.
19 | #
20 | # DON'T EDIT THIS!
21 | [dependencies]
22 | anyhow = "1.0.59"                                   # error handling
23 | bytes = "1.3.0"                                     # helps manage buffers
24 | thiserror = "1.0.38"                                # error handling
25 | tokio = { version = "1.23.0", features = ["full"] } # async networking
26 | nom = "7.1.3"                                       # parser combinators
27 | itertools = "0.11.0"                                # General iterator helpers
28 | 
29 | [dev-dependencies]
30 | pretty_assertions = "1.3.0"                         # nicer looking assertions
31 | 
32 | 


--------------------------------------------------------------------------------
/src/main.rs:
--------------------------------------------------------------------------------
  1 | // Uncomment this block to pass the first stage
  2 | use std::io::{Read, Write};
  3 | use std::net::{TcpListener, TcpStream};
  4 | use std::path::Path;
  5 | use std::{fs, thread};
  6 | 
  7 | fn handle_client(mut stream: TcpStream, file_directory_path: Option<String>) {
  8 |     println!("accepted new connection");
  9 | 
 10 |     let mut request_data = String::new();
 11 | 
 12 |     let mut request_buffer = [0; 1024];
 13 | 
 14 |     match stream.read(&mut request_buffer) {
 15 |         Ok(read_bytes) => {
 16 |             println!("read_bytes {read_bytes}");
 17 |             request_data.extend(String::from_utf8_lossy(&request_buffer[0..read_bytes]).chars());
 18 |         }
 19 |         Err(err) => {
 20 |             eprintln!("failed to read request {err}");
 21 |         }
 22 |     }
 23 | 
 24 |     println!("request-data {request_data}");
 25 | 
 26 |     let mut lines = request_data.split("\r\n").into_iter();
 27 |     let startline = lines.next().expect("Missing start line");
 28 | 
 29 |     println!("startline -->|{startline}");
 30 | 
 31 |     let mut segments = startline.split_whitespace();
 32 |     let method = segments.next().unwrap();
 33 |     let path = segments.next().unwrap();
 34 | 
 35 |     println!("path -> {path}");
 36 | 
 37 |     match path {
 38 |         "/" => {
 39 |             let _ = stream
 40 |                 .write("HTTP/1.1 200 OK\r\n\r\n".as_bytes())
 41 |                 .map_err(|err| eprintln!("failed to write to stream {err}"));
 42 |         }
 43 |         _ => {
 44 |             if path.starts_with("/echo/") {
 45 |                 let random_string = path.strip_prefix("/echo/").expect("failed to strip /echo/");
 46 | 
 47 |                 println!("random-string {random_string}");
 48 | 
 49 |                 let content_length = random_string.len();
 50 | 
 51 |                 let response = format!("HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\nContent-Length: {content_length}\r\n\r\n{random_string}\r\n");
 52 | 
 53 |                 let _ = stream
 54 |                     .write(response.as_bytes())
 55 |                     .map_err(|err| eprintln!("failed to write to stream {err}"));
 56 |             } else if path == "/user-agent" {
 57 |                 let _ = lines.next();
 58 |                 let user_agent_line = lines.next().expect("missing user agent line");
 59 |                 let user_agent = user_agent_line
 60 |                     .split(": ")
 61 |                     .skip(1)
 62 |                     .next()
 63 |                     .expect("missing user-agent");
 64 | 
 65 |                 let content_length = user_agent.len();
 66 | 
 67 |                 let response = format!("HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\nContent-Length: {content_length}\r\n\r\n{user_agent}\r\n");
 68 | 
 69 |                 let _ = stream
 70 |                     .write(response.as_bytes())
 71 |                     .map_err(|err| eprintln!("failed to write to stream {err}"));
 72 |             } else if path.starts_with("/files/") {
 73 |                 let file_name = path
 74 |                     .strip_prefix("/files/")
 75 |                     .expect("failed to strip /files/");
 76 | 
 77 |                 match (file_directory_path, method) {
 78 |                     (Some(dir_path), "GET") => {
 79 |                         let file_path = Path::new(&dir_path).join(file_name);
 80 |                         match fs::read(file_path) {
 81 |                             Ok(file) => {
 82 |                                 let content_length = file.len();
 83 |                                 let response = format!("HTTP/1.1 200 OK\r\nContent-Type: application/octet-stream\r\nContent-Length: {content_length}\r\n\r\n");
 84 | 
 85 |                                 let _ = stream
 86 |                                     .write(response.as_bytes())
 87 |                                     .map_err(|err| eprintln!("failed to write to stream {err}"));
 88 | 
 89 |                                 let _ = stream.write_all(&file).map_err(|err| {
 90 |                                     eprintln!("failed to write file to stream {err}")
 91 |                                 });
 92 |                             }
 93 |                             Err(_) => {
 94 |                                 let _ = stream
 95 |                                     .write("HTTP/1.1 404 Not Found\r\n\r\n".as_bytes())
 96 |                                     .map_err(|err| eprintln!("failed to write to stream {err}"));
 97 |                             }
 98 |                         }
 99 |                     }
100 |                     (Some(dir_path), "POST") => {
101 |                         while lines.next().is_some_and(|l| !l.is_empty()) {}
102 | 
103 |                         let mut file: Vec<u8> = Vec::new();
104 | 
105 |                         for line in lines {
106 |                             file.extend(line.as_bytes())
107 |                         }
108 | 
109 |                         let file_path = Path::new(&dir_path).join(file_name);
110 |                         match fs::write(file_path, file) {
111 |                             Ok(_) => {
112 |                                 let response = format!("HTTP/1.1 201 Created\r\n\r\n");
113 | 
114 |                                 let _ = stream
115 |                                     .write(response.as_bytes())
116 |                                     .map_err(|err| eprintln!("failed to write to stream {err}"));
117 |                             }
118 |                             Err(_) => {
119 |                                 let _ = stream
120 |                                     .write("HTTP/1.1 404 Not Found\r\n\r\n".as_bytes())
121 |                                     .map_err(|err| eprintln!("failed to write to stream {err}"));
122 |                             }
123 |                         }
124 |                     }
125 |                     _ => {
126 |                         let _ = stream
127 |                             .write("HTTP/1.1 404 Not Found\r\n\r\n".as_bytes())
128 |                             .map_err(|err| eprintln!("failed to write to stream {err}"));
129 |                     }
130 |                 }
131 |             } else {
132 |                 let _ = stream
133 |                     .write("HTTP/1.1 404 Not Found\r\n\r\n".as_bytes())
134 |                     .map_err(|err| eprintln!("failed to write to stream {err}"));
135 |             }
136 |         }
137 |     }
138 | 
139 |     let _ = stream
140 |         .shutdown(std::net::Shutdown::Both)
141 |         .map_err(|err| eprintln!("failed to shutdown connection {err}"));
142 | }
143 | 
144 | fn main() {
145 |     let listener = TcpListener::bind("127.0.0.1:4221").unwrap();
146 | 
147 |     let mut file_directory: Option<String> = None;
148 |     let args: Vec<String> = std::env::args().collect();
149 | 
150 |     match args.len() {
151 |         3 => {
152 |             let command = &args[1];
153 |             if command == "--directory" {
154 |                 file_directory = Some(args[2].clone());
155 |             }
156 |         }
157 |         _ => {}
158 |     }
159 | 
160 |     for stream in listener.incoming() {
161 |         match stream {
162 |             Ok(stream) => {
163 |                 let file_directory = file_directory.clone();
164 |                 let _handle = thread::spawn(move || {
165 |                     handle_client(stream, file_directory);
166 |                 });
167 |             }
168 |             Err(e) => {
169 |                 println!("error: {}", e);
170 |             }
171 |         }
172 |     }
173 | }
174 | 


--------------------------------------------------------------------------------
/Cargo.lock:
--------------------------------------------------------------------------------
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 98 | dependencies = [
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100 |  "bytes",
101 |  "itertools",
102 |  "nom",
103 |  "pretty_assertions",
104 |  "thiserror",
105 |  "tokio",
106 | ]
107 | 
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111 | source = "registry+https://github.com/rust-lang/crates.io-index"
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115 | ]
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160 |  "libc",
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162 |  "windows-sys",
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