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Teamviewer API doesn't support chunked Transfer-Encoding

Hi there!

I'm working on writing an integration and discovered that the Teamviewer API doesn't support chunked Transfer-Encoding. You can reproduce this nicely with curl:


Run curl with the following arguments with a valid authorization token:

curl -X POST -H "Content-Type: application/json" -d '{"instant": true}' -H 'Authorization: {validAuthorization}' -H 'Transfer-Encoding: chunked' -v

What happens:

{"error":"invalid_request","error_description":"No parameters given","error_code":1}

What should happen:

The endpoint should be able to decode chunked encoding, as it uis a HTTP standard. A reply should look something like this:

"id": "m12-345-678",
"participant_web_link": ""


Using non-chunked ('buffered') transfer encoding works out of the box:

curl -X POST -H "Content-Type: application/json" -d '{"instant": true}' -H 'Authorization: Bearer 3006253-qG6l7QNl0oRwa8w2PycG' -v

-> Works as expected

More information:

You can find more information about chunked encoding here:

Why is this relevant, even if there is a workaround

There are at least some HTTP libraries that by default use the chunked encoding mode. This for me created quite a bit of debugging until I found out the exact reasonj why this was faling and I suppose it could be a problem others encounter in the future, too.

The following code, which uses the Apache HTTP Client Connector for Jersey (written in Java) i.e. will be susceptible to this error:

public Client provideClient(SslContextProvider contextProvider) {
		ClientConfig config = new ClientConfig()
				.connectorProvider(new ApacheConnectorProvider())
				.property(ClientProperties.CONNECT_TIMEOUT, THIRTY_SECONDS)
				.property(ClientProperties.READ_TIMEOUT, THIRTY_SECONDS);
		try {
			return new JerseyClientBuilder()
		catch (GeneralSecurityException e) {
			throw new RuntimeException(e);

For reference (maybe somebody else encounters this problem and wants to know the solution I found:

adding this line disabled the default behavior of sending chunked encoded http requests:



1 Reply
1 Reply
Posted by TeamViewer Star
TeamViewer Star

Re: Teamviewer API doesn't support chunked Transfer-Encoding

At least this should be documented in TV API documentation.

mLipok , AutoIt MVP

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