[HTTPCLIENT-1280] CachingExec catches SocketTimeoutException silently and closes the backend InputStream

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.2.2, 4.2.3
• Fix Version/s: 4.3 Alpha1
• Component/s: HttpCache
• Assignee: Unassigned
• Reporter: Francois-Xavier Bonnet
• Created: 17/Dec/12 14:03
• Updated: 05/Oct/13 19:41
• Resolved: 17/Dec/12 17:15

Description

When a SocketTimeoutException occurs, CachingExec catches and logs it, then closes the Inputstream:
11-12 08:23:18 10010 [qtp907773188-11] WARN org.apache.http.impl.client.cache.CachingHttpClient - Unable to store entries in cache
java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:150)
at java.net.SocketInputStream.read(SocketInputStream.java:121)
at org.apache.http.impl.io.AbstractSessionInputBuffer.read(AbstractSessionInputBuffer.java:204)
at org.apache.http.impl.io.ChunkedInputStream.read(ChunkedInputStream.java:177)
at org.apache.http.impl.io.ChunkedInputStream.read(ChunkedInputStream.java:201)
at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:155)
at org.apache.http.impl.client.cache.HeapResourceFactory.generate(HeapResourceFactory.java:54)
at org.apache.http.impl.client.cache.SizeLimitedResponseReader.doConsume(SizeLimitedResponseReader.java:103)
at org.apache.http.impl.client.cache.SizeLimitedResponseReader.readResponse(SizeLimitedResponseReader.java:75)
at org.apache.http.impl.client.cache.BasicHttpCache.cacheAndReturnResponse(BasicHttpCache.java:241)
at org.apache.http.impl.client.cache.CachingHttpClient.handleBackendResponse(CachingHttpClient.java:916)
at org.apache.http.impl.client.cache.CachingHttpClient.callBackend(CachingHttpClient.java:729)
at org.apache.http.impl.client.cache.CachingHttpClient.handleCacheMiss(CachingHttpClient.java:508)
at org.apache.http.impl.client.cache.CachingHttpClient.execute(CachingHttpClient.java:436)
at org.esigate.cache.CacheAdapter$HttpClientWrapper.execute(CacheAdapter.java:123)

Then there is no way for the code to know that a problem occurred and if you try to read the entity you get another Exception:
java.net.SocketException: Socket closed
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:150)
at java.net.SocketInputStream.read(SocketInputStream.java:121)
at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:166)
at org.apache.http.impl.io.SocketInputBuffer.fillBuffer(SocketInputBuffer.java:90)
at org.apache.http.impl.io.AbstractSessionInputBuffer.read(AbstractSessionInputBuffer.java:183)
at org.apache.http.impl.io.ChunkedInputStream.read(ChunkedInputStream.java:140)
at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:121)