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[TEST] Fix error if named pipe already connected (elastic/x-pack-elasticsearch#2423) 

On Windows a named pipe server must call ConnectNamedPipe() before using
a named pipe.  However, if the client has already connected then this
function returns a failure code, with detailed error code
ERROR_PIPE_CONNECTED.  The server must check for this, as it means the
connection will work fine.  The Java test that emulates what the C++
would do in production did not have this logic.

This was purely a test problem.  The C++ code used in production already
does the right thing.

relates elastic/x-pack-elasticsearch#2359

Original commit: elastic/x-pack-elasticsearch@e162887f28
This commit is contained in:
David Roberts 2017-09-05 13:39:22 +01:00 committed by GitHub
parent 500b4ac6b9
commit c73d70491a
1 changed files with 12 additions and 2 deletions
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10
qa/ml-no-bootstrap-tests/src/test/java/org/elasticsearch/xpack/ml/utils/NamedPipeHelperNoBootstrapTests.java
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@ -55,6 +55,8 @@ public class NamedPipeHelperNoBootstrapTests extends LuceneTestCase {
private static final long PIPE_REJECT_REMOTE_CLIENTS = 8;
private static final long NMPWAIT_USE_DEFAULT_WAIT = 0;
private static final int ERROR_PIPE_CONNECTED = 535;
private static final Pointer INVALID_HANDLE_VALUE = Pointer.createConstant(Pointer.SIZE == 8 ? -1 : 0xFFFFFFFFL);
static {
@ -131,8 +133,12 @@ public class NamedPipeHelperNoBootstrapTests extends LuceneTestCase {
private static String readLineFromPipeWindows(String pipeName, Pointer handle) throws IOException {
if (!ConnectNamedPipe(handle, Pointer.NULL)) {
// ERROR_PIPE_CONNECTED means the pipe was already connected so
// there was no need to connect it again - not a problem
if (Native.getLastError() != ERROR_PIPE_CONNECTED) {
throw new IOException("ConnectNamedPipe failed for pipe " + pipeName + " with error " + Native.getLastError());
}
}
IntByReference numberOfBytesRead = new IntByReference();
ByteBuffer buf = ByteBuffer.allocateDirect(BUFFER_SIZE);
if (!ReadFile(handle, Native.getDirectBufferPointer(buf), new DWord(BUFFER_SIZE), numberOfBytesRead, Pointer.NULL)) {
@ -162,8 +168,12 @@ public class NamedPipeHelperNoBootstrapTests extends LuceneTestCase {
private static void writeLineToPipeWindows(String pipeName, Pointer handle, String line) throws IOException {
if (!ConnectNamedPipe(handle, Pointer.NULL)) {
// ERROR_PIPE_CONNECTED means the pipe was already connected so
// there was no need to connect it again - not a problem
if (Native.getLastError() != ERROR_PIPE_CONNECTED) {
throw new IOException("ConnectNamedPipe failed for pipe " + pipeName + " with error " + Native.getLastError());
}
}
IntByReference numberOfBytesWritten = new IntByReference();
ByteBuffer buf = ByteBuffer.allocateDirect(BUFFER_SIZE);
buf.put((line + '\n').getBytes(StandardCharsets.UTF_8));