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(Go) HTTPS multipart/form-data POSTDemonstrates how to send a multipart/form-data POST over HTTPS (using TLS).
// 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 req := chilkat.NewHttpRequest() req.SetHttpVerb("POST") req.SetPath("/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.SetContentType("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.AddHeader("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.AddHeader("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.AddHeader("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.AddParam("UploadAgent","InterfaceVersion1.5") req.AddParam("user","userValue") req.AddParam("password","passwordValue") req.AddParam("file","fileValue") req.AddParam("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: pathToFileOnDisk := "c:/someDir/someFile.dat" success := req.AddFileForUpload("content2",pathToFileOnDisk) if success != true { fmt.Println(req.LastErrorText()) req.DisposeHttpRequest() return } // Alternatively, if the contents of the file are in memory, perhaps in a string // variable, the file can be added like this instead. fileContents := "This is the content of the file being uploaded." success = req.AddStringForUpload("content2","XXX",fileContents,"utf-8") // ----------------------------------------------------------- // 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.. // ------------------------------------------------------------ http := chilkat.NewHttp() // The request is ready... now send it using HTTPS (which is port 443 by default). resp := http.SynchronousRequest("www.myserver.com",443,true,req) if http.LastMethodSuccess() != true { fmt.Println(http.LastErrorText()) req.DisposeHttpRequest() http.DisposeHttp() return } fmt.Println("HTTP response status: ", resp.StatusCode()) // 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: htmlStr := resp.BodyStr() fmt.Println("Received:") fmt.Println(htmlStr) resp.DisposeHttpResponse() req.DisposeHttpRequest() http.DisposeHttp() |
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