kode-bridge

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A modern Rust library that implements HTTP Over IPC for cross-platform

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# kode-bridge

[![Rust](https://img.shields.io/badge/rust-stable-brightgreen.svg)](https://www.rust-lang.org/)
[![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](http://www.apache.org/licenses/LICENSE-2.0)
[![Crates.io](https://img.shields.io/crates/v/kode-bridge.svg)](https://crates.io/crates/kode-bridge)

**kode-bridge** is a modern Rust library that implements **HTTP Over IPC** for cross-platform (macOS, Linux, Windows) communication. It provides both **client and server** capabilities with elegant HTTP-style request/response and real-time streaming through Unix Domain Sockets or Windows Named Pipes, featuring a fluent API similar to reqwest with comprehensive connection pooling, advanced error handling, and high-performance streaming.

## ✨ Features

- **🌍 True Cross-Platform**: Automatically detects the platform and uses optimal IPC methods
  - **Unix/Linux/macOS**: Unix Domain Sockets
  - **Windows**: Named Pipes
- **🚀 Complete Client/Server Architecture**: 
  - **Client**: `IpcHttpClient` (HTTP-style request/response) + `IpcStreamClient` (real-time streaming)
  - **Server**: `IpcHttpServer` (HTTP routing service) + `IpcStreamServer` (streaming broadcast service)
- **💎 Fluent API**: Reqwest-inspired method chaining with type-safe JSON handling
- **📦 Auto Serialization**: Built-in JSON request and response processing
- **⚡ High Performance**: Optimized connection management strategies for different platforms
- **🔧 Easy Integration**: Based on [interprocess](https://github.com/kotauskas/interprocess) and Tokio async runtime
- **🔄 Backward Compatible**: Old API methods still work alongside new fluent interface
- **📖 Complete Support**: Includes examples, benchmarks, and comprehensive documentation

## 🚀 Quick Start

### Add Dependencies

```toml
[dependencies]
# Client only (default)
kode-bridge = "0.1"

# Server only  
kode-bridge = { version = "0.1", features = ["server"] }

# Both client and server
kode-bridge = { version = "0.1", features = ["full"] }

# Required runtime
tokio = { version = "1", features = ["full"] }
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
```

### Available Features

- **`client`** (default) - HTTP and streaming client functionality
- **`server`** - HTTP and streaming server functionality  
- **`full`** - Both client and server capabilities

### Basic Usage

```rust
use dotenvy::dotenv;
use kode_bridge::{IpcHttpClient, Result};
use std::env;
use std::time::Duration;

#[tokio::main]
async fn main() -> Result<()> {
    dotenv().ok();

// Use platform-appropriate environment variable with fallback
    #[cfg(unix)]
    let ipc_path = env::var("CUSTOM_SOCK").unwrap_or_else(|_| "/tmp/example.sock".to_string());
    #[cfg(windows)]
    let ipc_path = env::var("CUSTOM_PIPE").unwrap_or_else(|_| r"\\.\pipe\example".to_string());

println!("📡 Connecting to: {}", ipc_path);

// Create client with modern API
    let client = IpcHttpClient::new(&ipc_path)?;

// Use the new fluent API with custom headers and timeout
    let response = client
        .get("/version")
        .header("Authorization", "Bearer token123")
        .header("X-Custom-Header", "custom-value")
        .timeout(Duration::from_secs(10))
        .send()
        .await?;

println!("🔍 Response Details:");
    println!("  Status: {}", response.status());
    println!("  Success: {}", response.is_success());
    println!("  Content Length: {}", response.content_length());

// Parse and display JSON response
    match response.json_value() {
        Ok(json) => println!("📄 JSON Response: {:#}", json),
        Err(e) => {
            println!("📄 Raw Response: {:?}", response.body()?);
            println!("⚠️  JSON parse error: {}", e);
        }
    }

// Show pool stats if available
    if let Some(stats) = client.pool_stats() {
        println!("📊 Pool Stats: {}", stats);
    }

Ok(())
}
```

### Server Usage

```rust
use kode_bridge::{
    ipc_http_server::{HttpResponse, IpcHttpServer, Router},
    Result,
};
use serde_json::json;

#[tokio::main]
async fn main() -> Result<()> {
    // Create HTTP server with routing
    let router = Router::new()
        .get("/version", |_| async move {
            HttpResponse::json(&json!({"version": "1.0.0"}))
        })
        .post("/api/data", |ctx| async move {
            let data: serde_json::Value = ctx.json()?;
            HttpResponse::json(&json!({"received": data}))
        });

let mut server = IpcHttpServer::new("/tmp/server.sock")?.router(router);

println!("🚀 Server listening on /tmp/server.sock");
    server.serve().await
}
```

### Advanced Client Usage

```rust
use kode_bridge::{IpcHttpClient, IpcStreamClient};
use tokio_stream::StreamExt;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = IpcHttpClient::new("/tmp/service.sock")?;
    
    // All HTTP methods supported
    let response = client.put("/api/config")
        .json_body(&json!({"key": "value"}))
        .send()
        .await?;
    
    // Rich response inspection
    println!("Status: {}", response.status());
    println!("Headers: {:?}", response.headers());
    println!("Content length: {}", response.content_length());
    println!("Is client error: {}", response.is_client_error());
    println!("Is server error: {}", response.is_server_error());
    
    // Stream processing with real-time callbacks
    let stream_client = IpcStreamClient::new("/tmp/service.sock")?;
    
    stream_client
        .get("/events")
        .send()
        .await?
        .process_lines(|line| {
            println!("Real-time event: {}", line);
            Ok(())
        })
        .await?;
    
    Ok(())
}
```

### Using Environment Variables

Create a `.env` file:

```env
# Unix systems
CUSTOM_SOCK=/tmp/my_app.sock

# Windows systems (each backslash needs to be escaped by doubling)
CUSTOM_PIPE=\\\\.\\pipe\\\my_app
```

Then in your code:

```rust
use dotenv::dotenv;
use std::env;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    dotenv().ok();
    
    #[cfg(unix)]
    let path = env::var("CUSTOM_SOCK").unwrap_or("/tmp/default.sock".to_string());
    
    #[cfg(windows)]
    let path = env::var("CUSTOM_PIPE").unwrap_or(r"\\.\pipe\default".to_string());
    
    let client = IpcHttpClient::new(&path)?;
    
    // Use modern fluent API
    let response = client
        .get("/status")
        .timeout(Duration::from_secs(10))
        .send()
        .await?;
    
    // Or use legacy API for backward compatibility
    let response = client.request("GET", "/status", None).await?;
    
    Ok(())
}
```

## 📋 Examples

Run built-in examples:

```bash
# Basic request example
cargo run --example request

# Large data request example  
cargo run --example request_large

# Elegant HTTP client demo
cargo run --example elegant_http

# Elegant streaming client demo
cargo run --example elegant_stream

# Two client comparison
cargo run --example two_clients

# Real-time traffic monitoring
cargo run --example traffic

# HTTP server examples (requires server feature)
cargo run --example http_server --features server

# Streaming server examples (requires server feature)
cargo run --example stream_server --features server

# Using custom IPC path
CUSTOM_SOCK=/tmp/my.sock cargo run --example request  # Unix
CUSTOM_PIPE=\\\\.\\pipe\\my_pipe cargo run --example request  # Windows
```

## 🔥 Performance Benchmarks

Run performance benchmarks:

```bash
# Run all benchmarks
cargo bench

# View benchmark reports
open target/criterion/report/index.html
```

Benchmarks automatically:
- Detect the running platform
- Use appropriate environment variables (`CUSTOM_SOCK` or `CUSTOM_PIPE`)
- Apply platform-specific performance optimization strategies

## 🏗️ Architecture Design

```
┌─────────────────────────────────────────┬─────────────────────────┐
│              CLIENT SIDE                │     SERVER SIDE         │
├─────────────────────────────────────────┼─────────────────────────┤
│  IpcHttpClient   │  IpcStreamClient     │ IpcHttpServer │ IpcStreamServer │
│ (HTTP Req/Res)   │  (Real-time Stream)  │ (HTTP Routing)│ (Stream Broadcast)  │
├─────────────────────────────────────────┼─────────────────────────┤
│              Fluent API                 │    Routing System       │
│   (HTTP-like Methods & Method Chaining) │ (Request Handling & Response) │
├─────────────────────────────────────────┼─────────────────────────┤
│            http_client.rs               │   http_server.rs        │
│        (HTTP Protocol Handler)          │  (HTTP Protocol Server) │
├─────────────────────────────────────────┴─────────────────────────┤
│                    interprocess                              │
│                (Cross-Platform IPC Transport)                    │
├─────────────────┬───────────────────────┬─────────────────────────┤
│   Unix Sockets  │    Windows Pipes      │   Feature Flags         │
│   (Unix/Linux)  │     (Windows)         │ (client/server/full)    │
└─────────────────┴───────────────────────┴─────────────────────────┘
```

### Core Components

#### Client Components
- **`IpcHttpClient`**: HTTP-style request/response client with fluent API
- **`IpcStreamClient`**: Real-time streaming client for continuous data monitoring
- **Fluent API**: Method chaining with `get()`, `post()`, `timeout()`, `json_body()`, `send()`, etc.

#### Server Components
- **`IpcHttpServer`**: HTTP server with routing system and middleware support
- **`IpcStreamServer`**: Real-time streaming server with broadcast and multi-client management
- **Routing System**: Express.js-like routing patterns with path parameters and query parameter support

#### Shared Components
- **`http_client/server`**: Platform-agnostic HTTP protocol handling with chunked transfer encoding support
- **Smart Platform Detection**: Compile-time automatic selection of optimal IPC implementation
- **Feature Flags**: Flexible compile-time functionality selection

### API Comparison

| Feature | Old API | New Fluent API |
|---------|---------|---------------|
| GET Request | `client.request("GET", "/path", None)` | `client.get("/path").send()` |
| POST with JSON | `client.request("POST", "/path", Some(&json))` | `client.post("/path").json_body(&json).send()` |
| Timeout | Not supported | `client.get("/path").timeout(Duration::from_secs(5)).send()` |
| Response Status | `response.status` | `response.status()`, `response.is_success()` |
| JSON Parsing | `response.json()?` | `response.json::<T>()?` with type inference |
| Streaming | Not available | `stream_client.get("/events").json_results().await?` |

## 🎯 Use Cases

- **Local Service Communication**: Communicate with local processes like Clash, Mihomo, proxy services, etc.
- **Real-time Monitoring**: Stream traffic data, logs, metrics, and system events in real-time
- **Microservice Architecture**: High-performance inter-process HTTP communication
- **System Integration**: Replace traditional REST API local calls with IPC
- **Performance-Critical Applications**: Scenarios requiring low-latency local communication
- **Configuration Management**: Dynamic configuration updates with immediate feedback

## 🛠️ Development

### Build Project

```bash
git clone https://github.com/KodeBarinn/kode-bridge.git
cd kode-bridge
cargo build
```

### Run Tests

```bash
cargo test
```

### Generate Documentation

```bash
cargo doc --open
```

## 📚 Resources

- [Platform Guide](./PLATFORM_GUIDE.md) - Detailed cross-platform usage guide
- [Server Guide](./SERVER_GUIDE.md) - Complete server development guide
- [Examples](./examples/) - Complete example code (client and server)
- [Benchmarks](./benches/) - Performance benchmarks

## 🤝 Contributing

We welcome Issues and Pull Requests!

## 📄 License

This project is licensed under the [Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0).

See the [Licence](./Licence) file for details.

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