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(Swift) REST Send multipart/form-data

Demonstrates how to send a multipart/form-data HTTP request.

Chilkat Downloads for the Swift Programming Language

MAC OS X (Cocoa) Objective-C/Swift Libs

iOS Objective-C/Swift Libs

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

    let rest = CkoRest()

    //  Connect to the destination web server.
    var bTls: Bool = true
    var port: Int = 443
    var bAutoReconnect: Bool = true
    var success: Bool = rest.Connect("www.somewebserver.com", port: port, tls: bTls, autoReconnect: bAutoReconnect)

    //  This example will send the following multipart/form-data request.
    //  The Content-Length is automatically computed and added by Chilkat.
    //  It will be different than what is shown here.
    //  The boundary string is also generated by Chilkat and will be different
    //  than shown below.

    //  	POST /some_path HTTP/1.1
    //  	Content-Type: multipart/form-data; boundary=---------------------------735323031399963166993862150
    //  	Content-Length: 834
    // 
    //  	-----------------------------735323031399963166993862150
    //  	Content-Disposition: form-data; name="text1"
    // 
    //  	text 123 abc
    //  	-----------------------------735323031399963166993862150
    //  	Content-Disposition: form-data; name="text2"
    // 
    //  	xyz
    //  	-----------------------------735323031399963166993862150
    //  	Content-Disposition: form-data; name="file1"; filename="a.txt"
    //  	Content-Type: text/plain
    // 
    //  	Content of a.txt.
    // 
    //  	-----------------------------735323031399963166993862150
    //  	Content-Disposition: form-data; name="file2"; filename="a.html"
    //  	Content-Type: text/html
    // 
    //  	<!DOCTYPE html><title>Content of a.html.</title>
    // 
    //  	-----------------------------735323031399963166993862150
    //  	Content-Disposition: form-data; name="file3"; filename="starfish.jpg"
    //  	Content-Type: image/jpeg
    // 
    //  	binary data goes here
    //  	-----------------------------735323031399963166993862150--

    //  Set the Content-Type for the topmost MIME part.
    rest.AddHeader("Content-Type", value: "multipart/form-data")

    //  Specify each part of the request.
    rest.PartSelector = "1"
    rest.AddHeader("Content-Disposition", value: "form-data; name=\"text1\"")
    rest.SetMultipartBodyString("text 123 abc")

    rest.PartSelector = "2"
    rest.AddHeader("Content-Disposition", value: "form-data; name=\"text2\"")
    rest.SetMultipartBodyString("xyz")

    rest.PartSelector = "3"
    rest.AddHeader("Content-Disposition", value: "form-data; name=\"file1\"; filename=\"a.txt\"")
    rest.AddHeader("Content-Type", value: "text/plain")
    rest.SetMultipartBodyString("Content of a.txt.")

    rest.PartSelector = "4"
    rest.AddHeader("Content-Disposition", value: "form-data; name=\"file2\"; filename=\"a.html\"")
    rest.AddHeader("Content-Type", value: "text/html")
    let sbHtml = CkoStringBuilder()
    sbHtml.LoadFile("qa_data/html/a.html", charset: "utf-8")
    rest.SetMultipartBodySb(sbHtml)

    rest.PartSelector = "5"
    rest.AddHeader("Content-Disposition", value: "form-data; name=\"file3\"; filename=\"starfish.jpg\"")
    rest.AddHeader("Content-Type", value: "image/jpeg")
    let jpgBytes = CkoBinData()
    jpgBytes.LoadFile("qa_data/jpg/starfish.jpg")
    rest.SetMultipartBodyBd(jpgBytes)

    var responseBody: String? = rest.FullRequestMultipart("POST", uriPath: "/some_path")
    if rest.LastMethodSuccess != true {
        print("\(rest.LastErrorText)")
        return
    }

    //  ...
    //  ...

    //  Clear the REST object for any subsequent requests..
    rest.ClearAllHeaders()
    rest.ClearAllParts()
    rest.PartSelector = ""

}

 

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