Module server 

Server module

Provides MCP server implementation with multiple transport protocols (stdio, HTTP, SSE, Hybrid).

Main Components

• CratesDocsServer: Main server struct
• handler: MCP request handling
• transport: Transport layer implementation
• auth: OAuth authentication support

Handler Design

Single-layer architecture with all handling logic directly in CratesDocsHandler:

• CratesDocsHandler: Implements MCP protocol handler interface
• HandlerConfig: Configuration class, supports merge operation

Example

use crates_docs::{AppConfig, CratesDocsServer};
use crates_docs::server::handler::{CratesDocsHandler, HandlerConfig};
use std::sync::Arc;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let config = AppConfig::default();
    let server = Arc::new(CratesDocsServer::new(config)?);

    // Create handler with merged config
    let base_config = HandlerConfig::default();
    let override_config = HandlerConfig::new().with_verbose_logging();
    let handler = CratesDocsHandler::with_merged_config(
        server,
        base_config,
        Some(override_config)
    );

    // Run HTTP server
    let http_config = crates_docs::server::transport::HyperServerConfig::http();
    crates_docs::server::transport::run_hyper_server(&handler.server(), http_config).await?;

    Ok(())
}

Re-exports

pub use crate::config::ServerConfig;

pub use handler::CratesDocsHandler;

pub use transport::HyperServerConfig;

Modules

auth

Authentication module

auth_middleware

Authentication middleware for HTTP requests

handler

MCP request handler implementation

transport

Transport module

Structs

CratesDocsServer

Crates Docs MCP Server