BatchRequestContent doesn't work with big messages

[Rabbit2004Liza]

Describe the bug

I am trying to send batch of messages using ms graph.

I tried to execute this code and it worked correctly.

public static void main(String[] args) throws IOException
{
final ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder()
.clientId("xxx")
.clientSecret("xxx")
.tenantId("xxx")
.build();
GraphServiceClient graphServiceClient = new GraphServiceClient(clientSecretCredential,"https://graph.microsoft.com/.default");
BatchRequestContent batchRequestContent = new BatchRequestContent(graphServiceClient);

    Message message1 = new Message();
    message1.setSubject("sub1");

    ItemBody body1 = new ItemBody();
    body1.setContentType(BodyType.Text);
    body1.setContent( "body1");
    message1.setBody(body1);

    Recipient recipient1 = new Recipient();
    EmailAddress emailAddress1 = new EmailAddress();
    emailAddress1.setAddress("xxx@gmail.com");
    recipient1.setEmailAddress(emailAddress1);

    message1.setToRecipients(List.of(recipient1));

    SendMailPostRequestBody sendMailPostRequestBody1 = new SendMailPostRequestBody();
    sendMailPostRequestBody1.setMessage(message1);

    RequestInformation requestInformation1 =
            graphServiceClient.users()
                    .byUserId("xxx")
                    .sendMail()
                    .toPostRequestInformation(sendMailPostRequestBody1);

    batchRequestContent.addBatchRequestStep(requestInformation1);


    Message message2 = new Message();
    message2.setSubject("sub2");

    ItemBody body2 = new ItemBody();
    body2.setContentType(BodyType.Text);
    body2.setContent("body2");
    message2.setBody(body2);

    Recipient recipient2 = new Recipient();
    EmailAddress emailAddress2 = new EmailAddress();
    emailAddress2.setAddress("xxx@gmail.com");
    recipient2.setEmailAddress(emailAddress2);

    message2.setToRecipients(List.of(recipient2));

    SendMailPostRequestBody sendMailPostRequestBody2 = new SendMailPostRequestBody();
    sendMailPostRequestBody2.setMessage(message2);

    RequestInformation requestInformation2 =
            graphServiceClient.users()
                    .byUserId("xxx")
                    .sendMail()
                    .toPostRequestInformation(sendMailPostRequestBody2);

    batchRequestContent.addBatchRequestStep(requestInformation2);
    graphServiceClient.getBatchRequestBuilder().post(batchRequestContent, null);
    System.out.println("hello");
}

But than I added more symbols to message body and executed code again. It didn't print "hello" and recipient didn't get emails.
I tried to debug this case and found out that code execution is stucked in endless loop in PipedInputStream#awaitSpace.

What is the reason of such behavior ? Is there any way to fix it ?

This is the chunk of code which doesn't work. I just added more symbols to body1 and body2.

public static void main(String[] args) throws IOException
{
final ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder()
.clientId("xxx")
.clientSecret("xxx")
.tenantId("xxx")
.build();
GraphServiceClient graphServiceClient = new GraphServiceClient(clientSecretCredential,"https://graph.microsoft.com/.default");
BatchRequestContent batchRequestContent = new BatchRequestContent(graphServiceClient);

    Message message1 = new Message();
    message1.setSubject("sub1");

    ItemBody body1 = new ItemBody();
    body1.setContentType(BodyType.Text);
    body1.setContent( "body1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq");
    message1.setBody(body1);

    Recipient recipient1 = new Recipient();
    EmailAddress emailAddress1 = new EmailAddress();
    emailAddress1.setAddress("xxx@gmail.com");
    recipient1.setEmailAddress(emailAddress1);

    message1.setToRecipients(List.of(recipient1));

    SendMailPostRequestBody sendMailPostRequestBody1 = new SendMailPostRequestBody();
    sendMailPostRequestBody1.setMessage(message1);

    RequestInformation requestInformation1 =
            graphServiceClient.users()
                    .byUserId("xxx")
                    .sendMail()
                    .toPostRequestInformation(sendMailPostRequestBody1);

    batchRequestContent.addBatchRequestStep(requestInformation1);


    Message message2 = new Message();
    message2.setSubject("sub2");

    ItemBody body2 = new ItemBody();
    body2.setContentType(BodyType.Text);
    body2.setContent("body2wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww");
    message2.setBody(body2);

    Recipient recipient2 = new Recipient();
    EmailAddress emailAddress2 = new EmailAddress();
    emailAddress2.setAddress("xxx@gmail.com");
    recipient2.setEmailAddress(emailAddress2);

    message2.setToRecipients(List.of(recipient2));

    SendMailPostRequestBody sendMailPostRequestBody2 = new SendMailPostRequestBody();
    sendMailPostRequestBody2.setMessage(message2);

    RequestInformation requestInformation2 =
            graphServiceClient.users()
                    .byUserId("xxx")
                    .sendMail()
                    .toPostRequestInformation(sendMailPostRequestBody2);

    batchRequestContent.addBatchRequestStep(requestInformation2);
    graphServiceClient.getBatchRequestBuilder().post(batchRequestContent, null);
    System.out.println("hello");
}

Expected behavior

I expect that this chunk of code will be executed correctly and two messages will be delivered to recipient.

public static void main(String[] args) throws IOException
{
final ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder()
.clientId("xxx")
.clientSecret("xxx")
.tenantId("xxx")
.build();
GraphServiceClient graphServiceClient = new GraphServiceClient(clientSecretCredential,"https://graph.microsoft.com/.default");
BatchRequestContent batchRequestContent = new BatchRequestContent(graphServiceClient);

    Message message1 = new Message();
    message1.setSubject("sub1");

    ItemBody body1 = new ItemBody();
    body1.setContentType(BodyType.Text);
    body1.setContent( "body1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq");
    message1.setBody(body1);

    Recipient recipient1 = new Recipient();
    EmailAddress emailAddress1 = new EmailAddress();
    emailAddress1.setAddress("xxx@gmail.com");
    recipient1.setEmailAddress(emailAddress1);

    message1.setToRecipients(List.of(recipient1));

    SendMailPostRequestBody sendMailPostRequestBody1 = new SendMailPostRequestBody();
    sendMailPostRequestBody1.setMessage(message1);

    RequestInformation requestInformation1 =
            graphServiceClient.users()
                    .byUserId("xxx")
                    .sendMail()
                    .toPostRequestInformation(sendMailPostRequestBody1);

    batchRequestContent.addBatchRequestStep(requestInformation1);


    Message message2 = new Message();
    message2.setSubject("sub2");

    ItemBody body2 = new ItemBody();
    body2.setContentType(BodyType.Text);
    body2.setContent("body2wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww");
    message2.setBody(body2);

    Recipient recipient2 = new Recipient();
    EmailAddress emailAddress2 = new EmailAddress();
    emailAddress2.setAddress("xxx@gmail.com");
    recipient2.setEmailAddress(emailAddress2);

    message2.setToRecipients(List.of(recipient2));

    SendMailPostRequestBody sendMailPostRequestBody2 = new SendMailPostRequestBody();
    sendMailPostRequestBody2.setMessage(message2);

    RequestInformation requestInformation2 =
            graphServiceClient.users()
                    .byUserId("xxx")
                    .sendMail()
                    .toPostRequestInformation(sendMailPostRequestBody2);

    batchRequestContent.addBatchRequestStep(requestInformation2);
    graphServiceClient.getBatchRequestBuilder().post(batchRequestContent, null);
    System.out.println("hello");
}

How to reproduce

execute code with any correct credentials and email adderesses

public static void main(String[] args) throws IOException
{
final ClientSecretCredential clientSecretCredential = new ClientSecretCredentialBuilder()
.clientId("xxx")
.clientSecret("xxx")
.tenantId("xxx")
.build();
GraphServiceClient graphServiceClient = new GraphServiceClient(clientSecretCredential,"https://graph.microsoft.com/.default");
BatchRequestContent batchRequestContent = new BatchRequestContent(graphServiceClient);

    Message message1 = new Message();
    message1.setSubject("sub1");

    ItemBody body1 = new ItemBody();
    body1.setContentType(BodyType.Text);
    body1.setContent( "body1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq");
    message1.setBody(body1);

    Recipient recipient1 = new Recipient();
    EmailAddress emailAddress1 = new EmailAddress();
    emailAddress1.setAddress("xxx@gmail.com");
    recipient1.setEmailAddress(emailAddress1);

    message1.setToRecipients(List.of(recipient1));

    SendMailPostRequestBody sendMailPostRequestBody1 = new SendMailPostRequestBody();
    sendMailPostRequestBody1.setMessage(message1);

    RequestInformation requestInformation1 =
            graphServiceClient.users()
                    .byUserId("xxx")
                    .sendMail()
                    .toPostRequestInformation(sendMailPostRequestBody1);

    batchRequestContent.addBatchRequestStep(requestInformation1);


    Message message2 = new Message();
    message2.setSubject("sub2");

    ItemBody body2 = new ItemBody();
    body2.setContentType(BodyType.Text);
    body2.setContent("body2wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww");
    message2.setBody(body2);

    Recipient recipient2 = new Recipient();
    EmailAddress emailAddress2 = new EmailAddress();
    emailAddress2.setAddress("xxx@gmail.com");
    recipient2.setEmailAddress(emailAddress2);

    message2.setToRecipients(List.of(recipient2));

    SendMailPostRequestBody sendMailPostRequestBody2 = new SendMailPostRequestBody();
    sendMailPostRequestBody2.setMessage(message2);

    RequestInformation requestInformation2 =
            graphServiceClient.users()
                    .byUserId("xxx")
                    .sendMail()
                    .toPostRequestInformation(sendMailPostRequestBody2);

    batchRequestContent.addBatchRequestStep(requestInformation2);
    graphServiceClient.getBatchRequestBuilder().post(batchRequestContent, null);
    System.out.println("hello");
}

SDK Version

6.13.0

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Debug output

Click to expand log

```

</details>


### Configuration

                      <dependency>
				<groupId>com.microsoft.graph</groupId>
				<artifactId>microsoft-graph</artifactId>
				<version>6.13.0</version>
			</dependency>
			<dependency>
				<groupId>com.azure</groupId>
				<artifactId>azure-identity</artifactId>
				<version>1.12.2</version>
			</dependency> 

openjdk-21 (Oracle OpenJDK21 21.0.1)

### Other information

_No response_

[andrueastman]

Thanks for raising this @Rabbit2004Liza

To confirm here, are you using the dotnet SDK? The syntax looks more like java and there is no version 6.13.0 for the C# sdk.

[Rabbit2004Liza]

Yes, I am using java SDK.
I have just noticed that I sent my issue in th wrong place.

Can you readdress it to https://github.com/microsoftgraph/msgraph-sdk-java/issues ?
Or I need to close it and create new one at https://github.com/microsoftgraph/msgraph-sdk-java/issues ?