Skip to content

rust.grpc_no_deadline

Stability High

Detects gRPC calls without deadline/timeout configuration.

Why It Matters

Missing gRPC deadlines:

Requests hang forever — No timeout means indefinite wait
Resource exhaustion — Connections never released
Cascading failures — Slow services block callers

Example

// ❌ Before (no deadline)
async fn get_user(client: &UserServiceClient) -> User {
    client.get_user(GetUserRequest { id: 123 }).await?
}

// ✅ After (with deadline)
use tonic::Request;
use std::time::Duration;

async fn get_user(client: &UserServiceClient) -> User {
    let mut request = Request::new(GetUserRequest { id: 123 });
    request.set_timeout(Duration::from_secs(5));

    client.get_user(request).await?
}

What Unfault Detects

Tonic client calls without set_timeout
Missing deadline propagation
gRPC streams without timeout

Auto-Fix

Unfault can add timeout configuration to gRPC requests.