Add ServiceStack JsonServiceClient for Rust with typed DTOs

[Copilot]

Implements a JsonServiceClient for Rust that enables type-safe API requests to ServiceStack services using Add ServiceStack Reference DTOs.

Core Implementation

• JsonServiceClient - HTTP client with methods for GET, POST, PUT, DELETE, PATCH
• ServiceStackRequest/Response traits - Type system for request/response DTOs with path routing
• HttpMethod enum - Custom method support per request type
• Bearer token authentication - set_bearer_token() / clear_bearer_token()
• ServiceStackError - Typed errors for HTTP, JSON, and API failures

Usage

use servicestack::{JsonServiceClient, ServiceStackRequest, ServiceStackResponse};
use serde::{Deserialize, Serialize};

#[derive(Serialize)]
struct Hello {
    name: String,
}

impl ServiceStackRequest for Hello {
    type Response = HelloResponse;
    fn path(&self) -> String { "/hello".to_string() }
}

#[derive(Deserialize)]
struct HelloResponse {
    result: String,
}

impl ServiceStackResponse for HelloResponse {}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = JsonServiceClient::new("https://api.example.com");
    let response: HelloResponse = client.post(Hello { 
        name: "World".to_string() 
    }).await?;
    Ok(())
}

Testing

• Unit tests for client configuration and URL handling
• Integration tests with mockito for HTTP scenarios (auth, errors, methods)
• 4 examples demonstrating authentication, custom methods, and basic usage

Dependencies

Built on reqwest (HTTP), serde (JSON), tokio (async), thiserror (errors).

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• test.servicestack.net
  • Triggering command: target/debug/examples/complete_example (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Creating a ServiceStack JsonServiceClient for the Rust programming language that uses the Rust Add ServiceStack Language DTOs to make API Requests

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[mythz]

LGTM