Petar Petrov created HTTPCLIENT-1902:
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             Summary: Handle "HTTP/1.1 000 status code 000" responses
                 Key: HTTPCLIENT-1902
                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1902
             Project: HttpComponents HttpClient
          Issue Type: Bug
          Components: HttpClient (classic)
    Affects Versions: 4.5.5, 4.5.2
            Reporter: Petar Petrov
         Attachments: canResponseHaveABody.png, doReceiveResponse.png

Hi!

I have a very _funny_ behaviour where the HttpClient seems to wrongly interpret 
the body of an HTTP response as headers, the parsing of which eventually leads 
to a java.net.SocketTimeoutException. 

The underlying cause of this seems to be a a faulty server response, i.e.,
{noformat}
HTTP/1.1 000 status code 000{noformat}
Thank you Apple! /s

 

I have managed to trace the origin of the problem to the *method 
HttpRequestExecutor#canResponseHaveBody* where, as expected, 000 is not 
considered as a valid status code.

!canResponseHaveABody.png!

!doReceiveResponse.png!

So what happens seems to be that the status line and headers get parsed. The 
000 is not considered valid and that ends the processing of the response. Then 
the rest of the response (the body) seems to go through the parsing procedure 
again in *DefaultHttpResponseParser#parseHead*. The body is of content type 
application/json. Eventually the following exceptions gets thrown after a while:
{code:java}
java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method)

at java.net.SocketInputStream.socketRead(SocketInputStream.java:127)

at java.net.SocketInputStream.read(SocketInputStream.java:182)

at java.net.SocketInputStream.read(SocketInputStream.java:152)

at 
org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:137)

at 
org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:153)

at 
org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:282)

at 
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:138)

at 
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56)

at 
org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)

at 
org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)

at 
org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:165)

at 
org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)

at 
org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)

at 
org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)

at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)

at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)

at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:111)

at 
org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)

at 
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)

at 
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
{code}
 

I'm not really familiar if 000 is even a valid return code. When querying the 
server with some other HTTP tools like Postman, I do get the json response with 
a status code 000.

Do you guys think this is something that can be fixed in HttpClient or at least 
handled by some sort of an error?

 



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