Rust

Send a Staged REST Request with No Body

Demonstrates Rest.SendReqNoBody, which sends a request without a body as the first step of the staged request model. After it succeeds, the response header and body are read separately.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

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Rust


let rest = chilkat::Rest::new();
let b_tls = true;
let b_auto_reconnect = true;
if rest.connect("example.com", 443, b_tls, b_auto_reconnect).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// Send a request without a request body.  This is a low-level send: after it succeeds, read the
// response header and body separately.
if rest.send_req_no_body("GET", "/api/items/123").is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// After sending, read the response status line and header fields.  The return value is the HTTP
// status code, or -1 if no response was received.
let status_code = rest.read_response_header();
if status_code < 0 {
    println!("{}", rest.last_error_text());
    return;
}

println!("Response status code: {}", status_code);

// Read the response body as text.
let Ok(response_body) = rest.read_resp_body_string() else {
    println!("{}", rest.last_error_text());
    return;
};

println!("{}", response_body);