Get connection was cloesed error during PDF merge at deployed WCF service

Report · Apr 01, 2021

HI,

I am using Adobe tools api for combining PDFs to single file. The code is very stragihgt forward.

It is a .NET wcf web service. however, I got the following error.

Response received from the request: The underlying connection was closed: An unexpected error occurred on a send.

Any idea?

Thanks.

Here is the code:

Credentials credentials = Credentials.ServiceAccountCredentialsBuilder()

.FromFile(adobelicen + "/pdftools-api-credentials.json")

.Build();

ExecutionContext executionContext = ExecutionContext.Create(credentials);

CombineFilesOperation combineFilesOperation = CombineFilesOperation.CreateNew();

String[] files = source.Split(',');

FileRef firstFileToCombine = FileRef.CreateFromLocalFile(files[0]);

PageRanges pageRangesForFirstFile = GetPageRangeForPDF();

// Add the first file as input to the operation, along with its page range.

combineFilesOperation.AddInput(firstFileToCombine);

//combineFilesOperation.AddInput(firstFileToCombine, pageRangesForFirstFile);

// Create a second FileRef instance using a local file.

FileRef secondFileToCombine = FileRef.CreateFromLocalFile(files[1]);

PageRanges pageRangesForSecondFile = GetPageRangeForPDF();

combineFilesOperation.AddInput(secondFileToCombine);

/*FileRef thridFileToCombine = FileRef.CreateFromLocalFile(@"aerial.pdf");

combineFilesOperation.AddInput(thridFileToCombine);*/

// Execute the operation.

FileRef result = combineFilesOperation.Execute(executionContext);

// Save the result to the specified location.

result.SaveAs(output);