Rust

HTTP multipart/form-data Upload

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Demonstrates how to upload files to an HTTP server using a multipart/form-data POST. 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();
req.set_http_verb("POST");
req.set_content_type("multipart/form-data");
req.set_path("rcvFormDataUpload.aspx");

// Send an "Expect: 100-continue" header in the request.
// This causes the HTTP server to end a 100-continue response
// immediately after receiving the HTTP header.  The client
// (Chilkat) will receive this intermediate response, and if
// it's not an error response, it knows that the HTTP server will
// accept the data that is forthcoming.
// The alternative is to get an error response after trying to upload
// the entire contents of the files.
req.add_header("Expect", "100-continue");

// Call AddFileForUpload2 for each file to be uploaded in the HTTP multipart/form-data POST
// To allow Chilkat to determine the content-type automatically based on file-extension,
// call AddFileForUpload instead.

// The 1st arg is the filename passed in the HTTP request.
// The 2nd arg is the path in the local filesytem.
// The file is not loaded into memory.  It is streamed directly from the file
// when the HTTP POST is sent.
if req.add_file_for_upload2("starfish.jpg", "c:/qa_data/starfish.jpg", "image/jpg").is_err() {
    println!("{}", req.last_error_text());
    return;
}

if req.add_file_for_upload("something.pdf", "c:/qa_data/something.pdf").is_err() {
    println!("{}", req.last_error_text());
    return;
}

// Its also possible to add a file from a string:
let _ = req.add_string_for_upload("test.xml", "test.xml", "<abc>This is the test.xml content</abc>", "utf-8").is_ok();
// We'll assume success since no files are involved..

// This sends the HTTP request (with 3 files being uploaded) to
// http://www.mywebserver123abc.com/rcvFormDataUpload.aspx
let resp = chilkat::HttpResponse::new();
if http.http_s_req("www.mywebserver123abc.com", 80, false, &req, &resp).is_err() {
    println!("{}", http.last_error_text());
    return;
}

println!("HTTP response status: {}", resp.status_code());
// See the online reference documentation for 
// other information that can be obtained from the response object.

// To send using SSL/TLS, do this instead.
// This sends to https://www.mywebserver123abc.com/rcvFormDataUpload.aspx
if http.http_s_req("www.mywebserver123abc.com", 443, true, &req, &resp).is_err() {
    println!("{}", http.last_error_text());
    return;
}

println!("HTTP response status: {}", resp.status_code());
// See the online reference documentation for 
// other information that can be obtained from the response object.