Hi Alexander,
Thanks for your kind reminder.
Certainly I'll use sth. like Support_PortManager.getNextPort() to avoid such
port conflict issue.
Here I just want to describe the problem.
The test still fails on my machine sometimes. Could anyone tell me how to
write a stable test on this issue?
Or is it a bug of RI? Or is it possible to write a theoretically stable
test?
Thanks a lot in advance!
public void test_SocketChannel_BlockWriteRead() throws IOException {
final int CAPACITY_NORMAL = 200;
InetSocketAddress localAddr1 = new InetSocketAddress("127.0.0.1
",1234);
ServerSocket server = new ServerSocket(1234);
SocketChannel channel = SocketChannel.open();
channel.connect(localAddr1);
Socket client = server.accept();
client.setTcpNoDelay(true);
client.setSendBufferSize(1);
OutputStream out = client.getOutputStream();
byte[] sendBuf = new byte[CAPACITY_NORMAL * 2];
for (int i = 0; i < CAPACITY_NORMAL * 2; i++) {
sendBuf[i] = (byte) i;
}
// send CAPACITY_NORMAL * 2 bytes data
out.write(sendBuf);
out.flush();
// no matter out.close() or client.shutdownOutput() is used
// the test still fails sometimes.
// out.close();
client.shutdownOutput();
ByteBuffer buf1 = ByteBuffer.allocate(CAPACITY_NORMAL);
ByteBuffer buf2 = ByteBuffer.allocate(CAPACITY_NORMAL);
ByteBuffer[] buf ={buf1, buf2};
// should receive CAPACITY_NORMAL * 2 bytes data
long count = 0;
do{
long ret = channel.read(buf);
if(ret == -1){
break;
}
count += ret;
}while(count < CAPACITY_NORMAL*2);
assertEquals(CAPACITY_NORMAL * 2, count);
}
On 6/23/06, Alexander Kleymenov <[EMAIL PROTECTED]> wrote:
Hello Andrew,
I ran the test on RI (1.4.2_04-b05 and 1.5.0-b64) and could not
reproduce the failure. Is it still an issue?
Can I suggest a little improvement for your test? Try do not use
hardcoded port numbers in the test.
Let the ServerSocket choose the available port by specifying 0 as
parameter.
I.e. write the test as:
ServerSocket server = new ServerSocket(0);
InetSocketAddress localAddr1 = new InetSocketAddress("127.0.0.1",
server.getLocalPort());
Such a way prevents the test from "Address in use" exception.
Thank You,
Alexander
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Andrew Zhang
China Software Development Lab, IBM
