Dynamsoft TWAIN Products

Hi Catherine,

We are using the Licensed version of DynamicWebTwain Active X control in our webserver. It works well in our local environment, but when we repeated the same steps on the QA Webserver, it is giving always HTTP process error.

HTTPUploadThroughPost(strHostIP,0,strActionPage,"SampleID.JPG");

We are reading the HostIP from the web.config file ( we have tried by giving machine name and both physical IP address), the Action page path is the relative path like ("/Georgia/Module/Sample/SaveToFile.aspx"). The SaveToFile.cs contents are as follows in the page_load event:



HttpFileCollection files = HttpContext.Current.Request.Files;
HttpPostedFile uploadfile = files["RemoteFile"];
string strpath=UTL.WebAppConfig.ImageSavingPath;
int fileLength=uploadfile.ContentLength;
bool returnType=false;
if(fileLength!=0)
{
string fileName = string.Empty;
string fileType = string.Empty;
string[] fileParts;
string strSampleID;
fileName = uploadfile.FileName;
fileName = System.IO.Path.GetFileName(fileName);
fileParts = fileName.Split('.');
fileType = fileParts[fileParts.Length-1].ToUpper().Trim();
strSampleID=fileParts[0].ToUpper().Trim();

uploadfile.SaveAs (strpath + fileName);
string username=String.Empty;
if(Session["ScanUsername"]!=null)
{
username=Session["ScanUsername"].ToString();
}
objSamplesRegisterModify.SaveImagePath(fileName,strSampleID.ToString().Trim(),username); // this line of code is specific to project which stores the image path in the database.
}


Pls help us in providing a solution.

Please check the security of the server directory where the images are uploaded first. Make sure the ASP.NET Machine Account has read/write access to this directory.

If this is not the issue, would you please let us know the response string from the HTTP server (you can check the HTTPPostResponseString property)?

Thanks.

Hi Catherine/Robert,

I am getting HTTP Process error when I used HTTPUploadAllThroughPostAsMultiPageTIFF method to upload the scanned documents to the server. It is returning a non zero error code but uploads successfully to the server if we ignore the errors in the dev environment (which is not secure). I am setting the HttpPort property to 80 in the dev and 443 in the QA.

Same code is not uploading the documents to the server in the secured QA environment even after ignoring the errors.

Below is the code I used for uploading:


function Save()
{
if(frmScan.WebTwain1.HowManyImagesInBuffer == 0)
{
alert("Please Scan and then click Save button");
}
else
{
var strActionPage;
var strHostIP;

var CurrentPathName = unescape(location.pathname); // get current PathName in plain ASCII
var CurrentPath = CurrentPathName.substring(0, CurrentPathName.lastIndexOf("/") + 1);
var actionpage = "<%=pagename%>" + "&docname=<%=docname%>";
strActionPage = CurrentPath + actionpage; //the ActionPage's file path
strHostIP = "<%=servername%>"; //"<%=servername%>";"localhost" //the host's ip or name
//strHostIP = "localhost"; //the host's ip or name

frmScan.WebTwain1.HTTPPort = <%=portnum%>;
frmScan.WebTwain1.HTTPUploadAllThroughPostAsMultiPageTIFF(strHostIP, strActionPage,"");
//frmScan.WebTwain1.HTTPUploadThroughPost(strHostIP,0,strActionPage,justfilename);


/*if (frmScan.WebTwain1.ErrorCode != 0)
{
alert(frmScan.WebTwain1.ErrorString);
alert(frmScan.WebTwain1.HTTPPostResponseString);

}
else
{*/
alert("uploaded");
document.forms[0].submit();
doSubmit(1);
//}
}


}

Below is the Response String I got:

I am not able to load the image here. But I have sent an email to TWAINSupport@dynamsoft.com with the response string image.


Below is the code I used in the page load event handler of aspx.cs file:


if(utils.IsSecure())
portnum = "443";
else
portnum = "80";


servername = utils.GetUrlBase(this.Context.Request.Url);
servername = servername.Substring(servername.IndexOf("://")+3);
pagename = "UploadScanDoc.aspx?&user_id=" + enc_userid; //+ "&docname=" + docname;
sessionid = this.Context.Session.SessionID + "_";


if(filingid == "" && Request["filingid"] != null && Request["filingid"] != "")
{
filingid = Request["filingid"].ToString();
docname = sessionid+filingid+".tif";
}


//set docpath
string orgdocstoredpath = "";
string pdfstoredpath = "";
string dummy_filename = "";
string pdfilename = "";
string dummy = "";
string datepath = "";
FilingEdit.getPermanentPaths(ref dummy_filename, out pdfilename, out datepath, out orgdocstoredpath, out pdfstoredpath, out dummy, out dummy);
//upload the doc
docpath = orgdocstoredpath + datepath;
docpath += "\\";

if(Session["UploadedScanDoc"] == null || Session["UploadedScanDoc"].ToString() == "")
{
Session["UploadedScanDoc"] = docpath+docname;
}


Below is the code we used for the Action Page -> UploadScanDoc.aspx.cs:

if(userid.Length > 0 && Request.ContentLength > 0)
{
long UserID = long.Parse(userid);
theUser = new User(UserID);

if(theUser != null && (theUser.GroupID == 2 || theUser.GroupID == 3))
{
if(Request["docname"] != null && Request["docname"] != "")
{
string docName = Request["docname"].ToString();
string orgdocstoredpath = "";
string pdfstoredpath = "";
string filename = "";
string pdfilename = "";
string dummy = "";
string datepath = "";
FilingEdit.getPermanentPaths(ref filename, out pdfilename, out datepath, out orgdocstoredpath, out pdfstoredpath, out dummy, out dummy);
System.IO.Directory.CreateDirectory(orgdocstoredpath + datepath);
//upload the doc
string absolutePath = orgdocstoredpath + datepath + "\\" + docName;

HttpFileCollection files = HttpContext.Current.Request.Files;
if(files != null)
{
HttpPostedFile uploadfile = files["RemoteFile"];

if(uploadfile != null)
{
//uploadfile.SaveAs(absolutePath);
int bufferSize = 4096;
Stream readStream = uploadfile.InputStream;

FileInfo f = new FileInfo(absolutePath);
FileStream writeStream = f.Open(FileMode.OpenOrCreate, FileAccess.ReadWrite);

byte[] buffer = new byte[bufferSize];
int count = 0;
int offset = 0;
while( (count = readStream.Read( buffer, offset, buffer.Length ) ) > 0 )
{
writeStream.Write(buffer,offset,count);
}
readStream.Close();
writeStream.Close();

}
else
{
System.Diagnostics.EventLog.WriteEntry("ScanUpload","No upload file obj");
}
}
}
}


Please let us know the solution.
This is the important fix to be made. So please let us know as soon as possible.

Thanks,
Nagasree.
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Nagasree, please refer to our reply to another post of yours at:

http://www.dynamsoft.com/forum/viewtopic.php?t=422