Rust Requires Chilkat v11.0.0+

Parse Multipart Binary Http Response

See more HTTP Examples

This example demonstrates how to parse an HTTP response that is multipart and contains a binary file, such as a .zip or .pdf. Rust

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

let http = chilkat::Http::new();
let req = chilkat::HttpRequest::new();

// ...
// Insert code here to construct some kind of HTTP request.
// this example is to show how to parse a particular kind of response.
// ...
// ...

// Send the request (whatever it may be in your case) to get the HTTP response object.
let resp = chilkat::HttpResponse::new();
if http.http_s_req("www.somedomain.com", 443, true, &req, &resp).is_err() {
    println!("{}", http.last_error_text());
    return;
}

// Get the response body (which is expected to be binary)
let resp_body = chilkat::BinData::new();
let _ = resp.get_body_bd(&resp_body);

// For this example, the response body contains something like this:

// ------=_Part_21302_2029949381.1547401515443
// Content-Type: application/xop+xml; charset=UTF-8; type="text/xml"
// Content-Transfer-Encoding: 8bit
// Content-ID: <rootpart@ws.jboss.org>
// 
// <env:Envelope xmlns:env='http://schemas.xmlsoap.org/soap/envelope/'><env:Header></env:Header><env:Body>...</env:Body></env:Envelope>
// ------=_Part_21302_2029949381.1547401515443
// Content-Type: application/octet-stream
// Content-Transfer-Encoding: binary
// Content-Id: <fileArchivio-7d302908-4d64-43d3-bf4e-79ce806d43b3@ws.jboss.org>
// 
// BINARY_CONTENT_HERE...
// 
// ------=_Part_21302_2029949381.1547401515443--
// 

// Load it into a Chilkat MIME object.
let mime = chilkat::Mime::new();
if mime.load_mime_bd(&resp_body).is_err() {
    println!("{}", mime.last_error_text());
    return;
}

let num_parts = mime.num_parts();
if num_parts < 2 {
    println!("Expected multipart MIME with at least 2 sub-parts.");
    return;
}

// Get the 1st sub-part, which is the XML.

let part0 = chilkat::Mime::new();
let _ = mime.part_at(0, &part0);

// Should be OK because we checked NumParts above..
let xml_str = part0.get_body_decoded().unwrap_or_default();
println!("{}", xml_str);
println!("----");

// Save the 2nd part to a file.  (It is a .zip file in our test case..)

let part1 = chilkat::Mime::new();
let _ = mime.part_at(1, &part1);

let _ = part1.save_body("qa_output/attachedZip.zip").is_ok();

// Alternatively, we could extract the binary data to a BinData and use elsewhere..
let zip_data = chilkat::BinData::new();
let _ = part1.get_body_bd(&zip_data).is_ok();
let _ = zip_data.write_file("qa_output/attachedZip_again.zip").is_ok();

println!("OK.");