private static void log(String str, SSLEngineResult result) {
if (!logging) {
return;
}
if (resultOnce) {
resultOnce = false;
System.out.println(
"The format of the SSLEngineResult is: \n"
+ "\t\"getStatus() / getHandshakeStatus()\" +\n"
+ "\t\"bytesConsumed() / bytesProduced()\"\n");
}
HandshakeStatus hsStatus = result.getHandshakeStatus();
log(
str
+ result.getStatus()
+ "/"
+ hsStatus
+ ", "
+ result.bytesConsumed()
+ "/"
+ result.bytesProduced()
+ " bytes");
if (hsStatus == HandshakeStatus.FINISHED) {
log("\t...ready for application data");
}
}
private void checkResult(
SSLEngine engine,
SSLEngineResult result,
HandshakeStatus rqdHsStatus,
boolean consumed,
boolean produced)
throws Exception {
HandshakeStatus hsStatus = result.getHandshakeStatus();
if (hsStatus == HandshakeStatus.NEED_TASK) {
Runnable runnable;
while ((runnable = engine.getDelegatedTask()) != null) {
runnable.run();
}
hsStatus = engine.getHandshakeStatus();
}
if (hsStatus != rqdHsStatus) {
throw new Exception("Required " + rqdHsStatus + ", got " + hsStatus);
}
int bc = result.bytesConsumed();
int bp = result.bytesProduced();
if (consumed) {
if (bc <= 0) {
throw new Exception("Should have consumed bytes");
}
} else {
if (bc > 0) {
throw new Exception("Should not have consumed bytes");
}
}
if (produced) {
if (bp <= 0) {
throw new Exception("Should have produced bytes");
}
} else {
if (bp > 0) {
throw new Exception("Should not have produced bytes");
}
}
}
/*
* Try to flush out any existing outbound data, then try to wrap
* anything new contained in the src buffer.
* <P>
* Return the number of bytes actually consumed from the buffer,
* but the data may actually be still sitting in the output buffer,
* waiting to be flushed.
*/
private int doWrite(ByteBuffer src) throws IOException {
int retValue = 0;
if (outNetBB.hasRemaining() && !tryFlush(outNetBB)) {
return retValue;
}
/*
* The data buffer is empty, we can reuse the entire buffer.
*/
outNetBB.clear();
SSLEngineResult result = sslEngine.wrap(src, outNetBB);
retValue = result.bytesConsumed();
outNetBB.flip();
switch (result.getStatus()) {
case OK:
if (result.getHandshakeStatus() == HandshakeStatus.NEED_TASK) {
doTasks();
}
break;
default:
throw new IOException("sslEngine error during data write: " + result.getStatus());
}
/*
* Try to flush the data, regardless of whether or not
* it's been selected. Odds of a write buffer being full
* is less than a read buffer being empty.
*/
if (outNetBB.hasRemaining()) {
tryFlush(outNetBB);
}
return retValue;
}