restTemplate.exchange have exception "insufficient data written" with springboot 3.3

[automvc]

The example use springboot 3.0 is normal, but use springboot 3.3 have exception.
Maybe it is different from #31902

detail error:
org.springframework.web.client.ResourceAccessException: I/O error on POST request for "https://someurl/api/": insufficient data written
at org.springframework.web.client.RestTemplate.createResourceAccessException(RestTemplate.java:915)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:895)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:830)
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:691)

[automvc]

	try {
		URI uri = getUri(request, method);

		HttpHeaders headers = new HttpHeaders();
		Enumeration<String> headerNames = request.getHeaderNames();
		//set head from request 
		HttpEntity httpEntity = new HttpEntity<>(body, headers);
		ClientHttpRequestFactory clientHttpRequestFactory = (new SimpleClientHttpRequestFactory() {
		     //... 
		});

		ClientHttpRequestFactory factory = new BufferingClientHttpRequestFactory(clientHttpRequestFactory); // already use BufferingClientHttpRequestFactory

		RestTemplate restTemplate = new RestTemplate(factory);
		ResponseEntity serverResponse = null;

		serverResponse = restTemplate.exchange(uri, method, httpEntity, String.class); //this line have ResourceAccessException : insufficient data written

		// ... other
	} catch (Exception e) {
		logger.error("", e);
	}
	return ResponseEntity.badRequest().build();

[poutsma]

If you'd like us to spend some time investigating, please take the time to provide a complete minimal sample (something that we can unzip or git clone, build, and deploy) that reproduces the problem.

[snicoll]

@automvc please stop creating duplicate issues. Can you provide the sample that we requested?

[spring-projects-issues]

If you would like us to look at this issue, please provide the requested information. If the information is not provided within the next 7 days this issue will be closed.

[spring-projects-issues]

Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.

[rajukosna]

Sample code is like:

@Autowired
RestTemplate restTemplate;

try {
URI uri = getUri(request, method);

	HttpHeaders headers = new HttpHeaders();
	Enumeration<String> headerNames = request.getHeaderNames();
	//set head from request 
	HttpEntity httpEntity = new HttpEntity<>(body, headers);
	
	ResponseEntity serverResponse = null;

	serverResponse = restTemplate.exchange(uri, method, httpEntity, String.class); //this line have ResourceAccessException : insufficient data written

	// ... other
} catch (Exception e) {
	logger.error("", e);
}

[ericdriggs]

Additional information from me duplicating on a service under test:

Exception is being thrown here:
SimpleClientHttpRequest::executeInternal#L88

this.connection.getResponseCode(); //throws java.io.IOException ("Incomplete output stream")

after the connection.connect(), the body and status code are empty

response works fine using curl/postman

errors with all of the following factory attempts

• new RestTemplate()
• ClientHttpRequestFactory factory =
  new BufferingClientHttpRequestFactory(new SimpleClientHttpRequestFactory());
  RestTemplate restTemplate = new RestTemplate(factory);
• HttpComponentsClientHttpRequestFactory (returns different 500)

spring boot version 3.4

Response information:

Content-Type: application/json
Content-Length: 219
status: 400
body: {"error": {"status": "400 Bad Request", "message": "..."}}
(Content length verified to be correct using postman)

[bclozel]

@ericdriggs unfortunately this doesn't help much. We can revisit this if you open a new issue with a minimal sample application we can run that reproduces the problem.

[gearkim0614]

restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory()); fixed it for me

[polatgo1]

@gearkim0614 suggestion fixes "insufficient data" case. But this causes redirection issue. It throws 421 when there is redirection to a public website, for example google.com, because http/2 is forced on background. This is so annoying that there isn't currently a solution that fixes both redirection and insufficent data issues.

result is always same ->>>>>> 421 Misdirected Request on GET request for ....