Function write_error 

pub async fn write_error(
    session: &mut Session,
    status: u16,
    body: &str,
    content_type: &str,
) -> Result<(), Box<Error>>

Write an error response to a Pingora session

Convenience wrapper for error responses with status code, body, and content type.

Arguments

• session - The Pingora session to write to
• status - HTTP status code
• body - Response body as string
• content_type - Content-Type header value