Rust

Example: Http.DownloadAppend method

Demonstrates the DownloadAppend method. Rust

let target_path = "c:/temp/qa_output/download.txt".to_string();

let http = chilkat::Http::new();
http.set_keep_response_body(true);

// Assume the target file in the local filesystem does not yet exist.
let _ = http.download_append("https://chilkatsoft.com/testData/helloWorld.txt", &target_path).is_ok();
let mut status_code = http.last_status();
if status_code == 0 {
    // Unable to either send the request or get the response.
    println!("{}", http.last_error_text());
    return;
}

// Should be 200.
println!("Response status code: {}", status_code);

// Examine the contents of the file.
let sb = chilkat::StringBuilder::new();
let _ = sb.load_file(&target_path, "utf-8");
println!("{}", sb.get_as_string().unwrap_or_default());

// Output: 
// Response status code: 200
// Hello World!

// Download another text file and append to the target file.
let _ = http.download_append("https://chilkatsoft.com/testData/this_is_a_test.txt", &target_path).is_ok();
status_code = http.last_status();
if status_code == 0 {
    // Unable to either send the request or get the response.
    println!("{}", http.last_error_text());
    return;
}

// Should be 200.
println!("Response status code: {}", status_code);

// Examine the contents of the file.
let _ = sb.load_file(&target_path, "utf-8");
println!("{}", sb.get_as_string().unwrap_or_default());

// Output:
// Response status code: 200
// Hello World!This is a Test.

// Delete the local target file.
let fac = chilkat::FileAccess::new();
let _ = fac.file_delete(&target_path);

// Try to download a file that does not exist:
let _ = http.download_append("https://chilkatsoft.com/testData/does_not_exist.txt", &target_path).is_ok();
status_code = http.last_status();
if status_code == 0 {
    // Unable to either send the request or get the response.
    println!("{}", http.last_error_text());
} else {
    // We got a response, and we already know it wasn't a 200 success response.
    // It should be a 404 not found.
    println!("Response status code: {}", status_code);
    // Examine the response body.
    println!("Response body:");
    println!("{}", http.last_response_body());
}