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HTTP multipart-mixed POST (for a UPS Package Level Detail PLD Request)

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Demonstrates how to create a POST for a UPS Package Level Detail PLD Request. The request must be a multipart-mixed request having two sub-parts. The first is a application/x-www-form-urlencoded with name=value URL encoded pairs. The second is a application/x-ups-binary containing a UPS PLD request.

The HTTP request created by this example looks like this: 

POST /hapld/tos/kdwhapltos HTTP/1.1
Content-Type: multipart/mixed; boundary=------------050801040202040701030308
Host: domain
Content-Length: 658

--------------050801040202040701030308
Content-type: application/x-www-form-urlencoded
Content-length: 134

AppVersion=1.0&AcceptUPSLicenseAgreement=YES&VersionNumber=V4R1&UserId=myUser&Password=myPassword&ResponseType=application/x-ups-pld

--------------050801040202040701030308
Content-type: application/x-ups-binary
Content-length: 721

020094 2014041500000594196532600 000000001*AAV0Y203 DE 5941965326000001*BA1ZV0Y2036650001829 00001+0000000000000012 +0000000000000000KGS07COL10 3CMEUR000001*CA18TC239 AOK Bahnhofstr. Dresden 01099 DE *EAEVS+000000000000104200EUR*PA1ZV0Y2036650001829 02+0000012 +0000000+00000000+00000000+00000000*SA000005

--------------050801040202040701030308--
The HTTP response (if successful) is multipart MIME as shown below. This example will extract the response content using the Chilkat MIME API. 
Content-type: text/html
Content-length: 138

<HTML>
<HEAD>
<TITLE>UPS Internet Software</TITLE>
</HEAD>
<BODY>
<P>UPS Internet Software, Copyright UPS 1998</P>
</BODY>
</HTML>

--BOUNDARY
Content-type: application/x-ups-psmpld
Content-length: 104

UPSOnLine%1.0%0000%0000Successful completion - No errors found.                                    

--BOUNDARY
Content-type: application/x-ups-pld
Content-length: 800

000200000787300000640 KDGPLCR1                   United Parcel Service                      09/06/16  Page:1                    Test PLD Control Report                     05:44 PM                                                                                  ------------------------------------------------------------------------------- Pickup Date:20030813 Sequence#:000005900000002 #of Segments:000000000000000005                                                                                                                                                                  Shipper#:0TEST0     Book/Page#:5900000002 Shipments:000001 Packages:0000000001 10000012900000000Successful completion - No errors found.                                        
!!! Test Upload !!!
File Uploaded: n/a

--BOUNDARY--

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llSuccess = .F.

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

loReq = createobject("CkHttpRequest")

// The ContentType, HttpVerb, and Path properties should
// always be explicitly set.
loReq.HttpVerb = "POST"
loReq.Path = "/hapld/tos/kdwhapltos"
loReq.ContentType = "multipart/mixed"

// The 1st body of the multipart/mixed HTTP request will have a content-type of application/x-www-form-urlencoded
// It contains URL encoded parameters.
// We'll use a temporary HTTP request object solely for the purpose of generating our URL encoded parameter string.
loParamEncoder = createobject("CkHttpRequest")
loParamEncoder.AddParam("AppVersion","1.0")
loParamEncoder.AddParam("AcceptUPSLicenseAgreement","YES")
loParamEncoder.AddParam("VersionNumber","V4R1")
loParamEncoder.AddParam("UserId","UPS_USERID")
loParamEncoder.AddParam("Password","UPS_PASSWORD")
lcUrlEncodedParams = loParamEncoder.GetUrlEncodedParams()

// The UPS server wants all params to be URL encoded except for the ResponseType param.
// Therefore, we'll add ResponseType unencoded at the end, like this:
loSbParams = createobject("CkStringBuilder")
loSbParams.Append(lcUrlEncodedParams)
loSbParams.Append("&ResponseType=application/x-ups-pld")
// Also, it is very important to include a CRLF at the end.  (This is to satisfy undocumented details
// required by the UPS PLD server.)
loSbParams.Append(Chr(13) + Chr(10))

// Add the params as the 1st sub-part of the multipart/mixed request
loReq.AddStringForUpload2("","",loSbParams.GetAsString(),"","application/x-www-form-urlencoded")

// Now for the 2nd part (using some junk data found on the developerkitcommunity.ups.com site.
// Notice the CRLF at the end of the string.  This is important.
lcPld = "020094                                  2003081300000590000000200   000000001*AA0TEST0    DE                5900000002000001*BA1Z0TEST06800000018                 00001+0000000000000010 +0000000000000000KGS11PRE10                                   3CMEUR000001*CA18                                   United Parcel Service              Goerlitzer Str 1                                                                                         Neuss                              41460    DE                                                        *PA1Z0TEST06800000018                 02+0000010                                                                                      +0000000+00000000+00000000+00000000*SA000004" + Chr(13) + Chr(10)

loReq.AddStringForUpload2("","",lcPld,"","application/x-ups-binary")

// The UPS PLD server requires Content-Length headers within the MIME sub-parts of the request.
// If a Content-Length sub-header is added (with an arbitrary value, such as 0),
// then Chilkat will compute the actual sub-part size and replace the value when the request is sent.
loReq.AddSubHeader(0,"Content-Length","0")
loReq.AddSubHeader(1,"Content-Length","0")

// A few important comments about the HTTP request that is generated:
// 
// 1) Chilkat automatically generates a random boundary string.   In 99.999% of cases, this should 
//    be sufficient.
// 2) The top-level Content-Length header is automatically generated based on the actual length of the MIME message
//    that follows the intial (topmost) MIME header.
// 3) The HOST header will automatically get filled in with the actual domain when HttpSReq
//    method is called.

// Now send the request...
loHttp = createobject("CkHttp")

// If desired (for debugging), provide a flie path for a session log.
// The session log can be sent to support@chilkatsoft.com if the PLD request fails.
loHttp.SessionLogFilename = "c:/aaworkarea/ups_pld/sessionLog.txt"

// Send the PLD request over TLS..
loResp = createobject("CkHttpResponse")
llSuccess = loHttp.HttpSReq("www.pld-certify.ups.com",443,.T.,loReq,loResp)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    release loReq
    release loParamEncoder
    release loSbParams
    release loHttp
    release loResp
    return
endif

// Load the response MIME.
loMime = createobject("CkMime")
loMime.LoadMime(loResp.FullMime)

// If it does not have 3 sub-parts, then something is amiss...
if (loMime.NumParts <> 3) then
    ? "Unexpected number of MIME parts."
    ? loResp.FullMime
    release loReq
    release loParamEncoder
    release loSbParams
    release loHttp
    release loResp
    release loMime
    return
endif

// Examine each response part.

loPart0 = createobject("CkMime")
llSuccess = loMime.PartAt(0,loPart0)

? "---- text/html part ----"
? loPart0.GetBodyDecoded()

loPart1 = createobject("CkMime")
llSuccess = loMime.PartAt(1,loPart1)

? "---- application/x-ups-psmpld part ----"
? loPart1.GetBodyDecoded()

loPart2 = createobject("CkMime")
llSuccess = loMime.PartAt(2,loPart2)

? "---- application/x-ups-pld part ----"
? loPart2.GetBodyDecoded()


release loReq
release loParamEncoder
release loSbParams
release loHttp
release loResp
release loMime
release loPart0
release loPart1
release loPart2