Rust

HTTPS multipart/form-data POST

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Demonstrates how to send a multipart/form-data POST over HTTPS (using TLS). Rust

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

// This example demonstrates how to send a multipart/form-data POST that
// looks like this:

// 	POST /cgi/XXX.pl HTTP/1.0
// 	Accept: text/html
// 	Connection: Keep-Alive
// 	User-Agent: XXX/8.0.15
// 	Content-type: multipart/form-data, boundary=XXXxyxy
// 	Content-Length: 682
// 
// 	--XXXxyxy
// 	content-disposition: form-data; name="UploadAgent"
// 
// 	InterfaceVersion1.5
// 	--XXXxyxy
// 	content-disposition: form-data; name="user"
// 
// 	userValue
// 	--XXXxyxy
// 	content-disposition: form-data; name="password"
// 
// 	passwordValue
// 	--XXXxyxy
// 	content-disposition: form-data; name="file"
// 
// 	fileValue
// 	--XXXxyxy
// 	content-disposition: form-data; name="data_version"
// 
// 	dataVersion
// 	--XXXxyxy
// 	content-disposition: form-data; name="content2"; filename="XXX"
// 
// 	THE FILE CONTENT GOES HERE...
// 	--XXXxyxy--
// 

// First, let's build the HTTP request object
let req = chilkat::HttpRequest::new();

req.set_http_verb("POST");
req.set_path("/cgi/XXX.pl");

// The boundary string is automatically generated and added by Chilkat.
// The value for the boundary string doesn't matter. (As long as it's a unique string that doesn't occur elsewhere in the request.)
req.set_content_type("multipart/form-data");

// Adding the Connection: Keep-Alive is optional.  It only makes sense if the intent is to send
// additional requests to the same domain (your-namespace-sb.accesscontrol.windows.net) within a reasonable time period.
req.add_header("Connection", "Keep-Alive");

// --------------------------------------------------
// IMPORTANT: Never set the Content-Length header.  
// Chilkat will automatically compute the correct Content-Length and will add it.
// --------------------------------------------------

// If a specific User-Agent header field is needed, it can be added by calling AddHeader.
req.add_header("User-Agent", "XXX/8.0.15");

// The "Accept" header, if present, tells the server what Content-Type responses will be accepted.
// In this case, we're telling the server that we'll only accept "text/html" responses, and therefore
// the server SHOULD only send a text/html response.  Technically, the Accept header is not required.
req.add_header("Accept", "text/html");

// Add the params to the request.  Given that the Content-Type is set to "multipart/form-data", when
// Chilkat composes the request, it will put each param in it's own MIME sub-part (i.e. in it's own
// part delimited by the boundary string).
req.add_param("UploadAgent", "InterfaceVersion1.5");
req.add_param("user", "userValue");
req.add_param("password", "passwordValue");
req.add_param("file", "fileValue");
req.add_param("data_version", "dataVersion");

// The last param is the contents of a file.
// If it's a file on disk, we can add it like this:
let path_to_file_on_disk = "c:/someDir/someFile.dat".to_string();
if req.add_file_for_upload("content2", &path_to_file_on_disk).is_err() {
    println!("{}", req.last_error_text());
    return;
}

// Alternatively, if the contents of the file are in memory, perhaps in a string
// variable, the file can be added like this instead.
let file_contents = "This is the content of the file being uploaded.".to_string();
let _ = req.add_string_for_upload("content2", "XXX", &file_contents, "utf-8").is_ok();

// -----------------------------------------------------------
// IMPORTANT: To duplicate the HTTP request shown above, you'll want to choose 
// either AddStringForUpload or AddFileForUpload, but not both.  It's possible to upload
// any number of files by calling AddStringForUpload and/or AddFileForUpload any number
// of times, once per file to be uploaded.  This of course assumes that the receiving
// end is programmed to receive multiple files..
// ------------------------------------------------------------

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

// The request is ready... now send it using HTTPS (which is port 443 by default).

let resp = chilkat::HttpResponse::new();
if http.http_s_req("www.myserver.com", 443, true, &req, &resp).is_err() {
    println!("{}", http.last_error_text());
    return;
}

println!("HTTP response status: {}", resp.status_code());

// In this case, the response would be HTML because our Accept header
// told the server to only return HTML.  The HTML is available on the BodyStr
// property of the response object:
let html_str = resp.body_str();
println!("Received:");
println!("{}", html_str);