Imply basic req/resp mod

Cargo.lock

@@ -2,6 +2,21 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "addr2line"
+version = "0.25.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b5d307320b3181d6d7954e663bd7c774a838b8220fe0593c86d9fb09f498b4b"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler2"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.5"
@@ -61,12 +76,66 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "autocfg"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
+
+[[package]]
+name = "backtrace"
+version = "0.3.76"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb531853791a215d7c62a30daf0dde835f381ab5de4589cfe7c649d2cbe92bd6"
+dependencies = [
+ "addr2line",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+ "windows-link",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+
+[[package]]
+name = "color-eyre"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5920befb47832a6d61ee3a3a846565cfa39b331331e68a3b1d1116630f2f26d"
+dependencies = [
+ "backtrace",
+ "color-spantrace",
+ "eyre",
+ "indenter",
+ "once_cell",
+ "owo-colors",
+ "tracing-error",
+]
+
+[[package]]
+name = "color-spantrace"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8b88ea9df13354b55bc7234ebcce36e6ef896aca2e42a15de9e10edce01b427"
+dependencies = [
+ "once_cell",
+ "owo-colors",
+ "tracing-core",
+ "tracing-error",
+]
+
 [[package]]
 name = "colorchoice"
 version = "1.0.5"
@@ -127,14 +196,39 @@ dependencies = [
  "log",
 ]
 
+[[package]]
+name = "eyre"
+version = "0.6.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c08309dbcc659c5549a24ddb9b27027640641b282ef5768267c7e675558986a3"
+dependencies = [
+ "autocfg",
+ "indenter",
+ "once_cell",
+]
+
+[[package]]
+name = "gimli"
+version = "0.32.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e629b9b98ef3dd8afe6ca2bd0f89306cec16d43d907889945bc5d6687f2f13c7"
+
 [[package]]
 name = "http_server"
 version = "0.1.0"
 dependencies = [
+ "color-eyre",
  "env_logger",
  "log",
+ "thiserror",
 ]
 
+[[package]]
+name = "indenter"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "964de6e86d545b246d84badc0fef527924ace5134f30641c203ef52ba83f58d5"
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.2"
@@ -177,6 +271,18 @@ dependencies = [
  "syn 2.0.119",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
+[[package]]
+name = "libc"
+version = "0.2.189"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2"
+
 [[package]]
 name = "log"
 version = "0.4.33"
@@ -189,12 +295,48 @@ version = "2.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf8baf1c55e62ffcace7a9f06f4bd9cd3f0c4beb022d3b367256b91b87513d98"
 
+[[package]]
+name = "miniz_oxide"
+version = "0.8.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
+dependencies = [
+ "adler2",
+]
+
+[[package]]
+name = "object"
+version = "0.37.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff76201f031d8863c38aa7f905eca4f53abbfa15f609db4277d44cd8938f33fe"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "once_cell"
+version = "1.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
+
 [[package]]
 name = "once_cell_polyfill"
 version = "1.70.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
 
+[[package]]
+name = "owo-colors"
+version = "4.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d211803b9b6b570f68772237e415a029d5a50c65d382910b879fb19d3271f94d"
+
+[[package]]
+name = "pin-project-lite"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
+
 [[package]]
 name = "portable-atomic"
 version = "1.15.0"
@@ -257,6 +399,12 @@ version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6f6ff9a378485b298a5286656da665ba74413d36db0979633275d2e708145d4"
 
+[[package]]
+name = "rustc-demangle"
+version = "0.1.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b74b56ffa8bb2830709a538c2cbcae9aa062db0d2a42563bfb09bdaae44020eb"
+
 [[package]]
 name = "serde_core"
 version = "1.0.229"
@@ -277,6 +425,15 @@ dependencies = [
  "syn 3.0.3",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.119"
@@ -319,6 +476,56 @@ dependencies = [
  "syn 3.0.3",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ad99c4c6d32803332c548b1af0540b357b3f5fc0be8f6c6bfe8b2e6ae784070"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "tracing"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63e71662fa4b2a2c3a26f570f037eb95bb1f85397f3cd8076caed2f026a6d100"
+dependencies = [
+ "pin-project-lite",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db97caf9d906fbde555dd62fa95ddba9eecfd14cb388e4f491a66d74cd5fb79a"
+dependencies = [
+ "once_cell",
+ "valuable",
+]
+
+[[package]]
+name = "tracing-error"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b1581020d7a273442f5b45074a6a57d5757ad0a47dac0e9f0bd57b81936f3db"
+dependencies = [
+ "tracing",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb7f578e5945fb242538965c2d0b04418d38ec25c79d160cd279bf0731c8d319"
+dependencies = [
+ "sharded-slab",
+ "thread_local",
+ "tracing-core",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.24"
@@ -331,6 +538,12 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
+[[package]]
+name = "valuable"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
+
 [[package]]
 name = "windows-link"
 version = "0.2.1"

Cargo.toml

@@ -4,8 +4,10 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+color-eyre = "0.6.5"
 env_logger = "0.11.11"
 log = "0.4.33"
+thiserror = "2.0.20"
 
 [profile.dev]
 opt-level = 0

src/lib.rs

@@ -2,14 +2,16 @@ mod request;
 mod response;
 
 use request::{Header, ReqLine};
-use response::{Status, Version};
+use response::{Response, Version, Status};
 
 use std::io::{BufReader, BufWriter, Read, Write};
 use std::net::TcpStream;
+use std::fs::File;
+use std::path::{Path, PathBuf};
 
 use log::{debug, info};
 
-pub fn handle_connection(conn: TcpStream) -> std::io::Result<()> {
+pub fn handle_connection(conn: TcpStream) -> color_eyre::Result<()> {
     info!("Reveiced new connection from {}", conn.peer_addr()?);
 
     let reader = BufReader::new(conn.try_clone()?);
@@ -47,10 +49,20 @@ pub fn handle_connection(conn: TcpStream) -> std::io::Result<()> {
         debug!("{}: {}", line.key, line.value);
     }
 
-    let resp = "HTTP/1.1 200 OK\r\n\r\nHello, world!\r\n";
+    let file_path: Option<PathBuf> = req_line.route.starts_with("/").then(|| {
+        req_line.route.split("/").map(|s| Path::new(a)).collect()
+    });
 
-    let count = writer.write(resp.as_bytes())?;
+    let file_path = file_path.map(|p_buf| p_buf.canonicalize());
-    info!("Response sent ({})", count);
+
+    let file = file_path.map(|f_path| {
+        f_path.map(|f_path| File::open(f_path))
+    });
+
+    let count: Result<usize, _> = resp.as_str_list().into_iter()
+        .map(|s| writer.write(s.as_bytes()))
+        .sum();
+    info!("Response sent ({})", count?);
 
     writer.flush()?;
 

src/response.rs

@@ -1,9 +1,79 @@
+#[derive(Debug, Default)]
 pub(crate) enum Version {
+    #[default]
     V11,
 }
 
+#[derive(Debug, Default)]
 pub(crate) enum Status {
+    #[default]
     OK,
     NotFound,
     Forbidden,
+    BadRequest,
+}
+
+trait AsStaticStr {
+    fn as_str(&self) -> &'static str;
+}
+
+impl AsStaticStr for Version {
+    fn as_str(&self) -> &'static str {
+        match self {
+            Self::V11 => "HTTP/1.1",
+        }
+    }
+}
+
+impl AsStaticStr for Status {
+    fn as_str(&self) -> &'static str {
+        match self {
+            Self::OK => "200 OK",
+            Self::NotFound => "404 Not Found",
+            Self::Forbidden => "403 Forbidden",
+            Self::BadRequest => "400 Bad Request",
+        }
+    }
+}
+
+#[derive(Debug, Default)]
+pub(crate) struct Header {
+    pub(crate) key: String,
+    pub(crate) value: String,
+}
+
+impl Header {
+    pub(crate) fn as_str(&self) -> (&str, &str) {
+        (self.key.as_str(), self.value.as_str())
+    }
+}
+
+#[derive(Debug, Default)]
+pub(crate) struct Response {
+    pub(crate) version: Version,
+    pub(crate) status: Status,
+    pub(crate) headers: Vec<Header>,
+}
+
+impl Response {
+    pub(crate) fn as_str_list(&self) -> Vec<&str> {
+        let mut ret = vec!(
+            self.version.as_str(),
+            " ",
+            self.status.as_str(),
+            "\r\n",
+        );
+        ret.reserve(self.headers.len() * 3 + 5);
+        self.headers.iter()
+            .map(|header| header.as_str())
+            .map(|(k, v)| (k, ": ", v))
+            .for_each(|(x, y, z)| {
+                ret.push(x);
+                ret.push(y);
+                ret.push(z);
+                ret.push("\r\n");
+            });
+        ret.push("\r\n");
+        ret
+    }
 }

static/index.html

@@ -0,0 +1,49 @@
+<!DOCTYPE>
+<html>
+    <head>
+        <title>Test Page</title>
+        <style>
+            body {
+                width: 100%;
+            }
+
+            header {
+                width: 100%;
+                text-align: center;
+            }
+            header>* {
+                width: 100%;
+                text-align: center;
+            }
+
+            main {
+                width: 100%;
+                text-align: center;
+            }
+            main>* {
+                width: 100%;
+                text-align: center;
+            }
+
+            footer {
+                width: 100%;
+                text-align: center;
+            }
+            footer>* {
+                width: 100%;
+                text-align: center;
+            }
+        </style>
+    </head>
+    <body>
+        <header>
+            <h1>Welcome to rust-http-server!</h1>
+        </header>
+        <main>
+            <p>The basic function of this server is working properly, if you are able to see this page.</p>
+        </main>
+        <footer>
+            <p>12Hydrogen 2026</p>
+        </footer>
+    </body>
+</html>