public static ByteBuffer constructStreamHeader(boolean compress, boolean stream) {
/*
Setting up the protocol header. This is 4 bytes long
represented as an integer. The first 2 bits indicate
the serializer type. The 3rd bit indicates if compression
is turned on or off. It is turned off by default. The 4th
bit indicates if we are in streaming mode. It is turned off
by default. The following 4 bits are reserved for future use.
The next 8 bits indicate a version number. Remaining 15 bits
are not used currently.
*/
int n = 0;
// Setting up the serializer bit
n |= serializerType_.ordinal();
// set compression bit.
if (compress) n |= 4;
// set streaming bit
if (stream) n |= 8;
// Setting up the version bit
n |= (version_ << 8);
/* Finished the protocol header setup */
byte[] header = toByteArray(n);
ByteBuffer buffer = ByteBuffer.allocate(16 + header.length);
buffer.put(protocol_);
buffer.put(header);
buffer.flip();
return buffer;
}
public static ByteBuffer packIt(
byte[] bytes, boolean compress, boolean stream, boolean listening) {
byte[] size = toByteArray(bytes.length);
/*
Setting up the protocol header. This is 4 bytes long
represented as an integer. The first 2 bits indicate
the serializer type. The 3rd bit indicates if compression
is turned on or off. It is turned off by default. The 4th
bit indicates if we are in streaming mode. It is turned off
by default. The 5th bit is used to indicate that the sender
is not listening on any well defined port. This implies the
receiver needs to cache the connection using the port on the
socket. The following 3 bits are reserved for future use.
The next 8 bits indicate a version number. Remaining 15 bits
are not used currently.
*/
int n = 0;
// Setting up the serializer bit
n |= serializerType_.ordinal();
// set compression bit.
if (compress) n |= 4;
// set streaming bit
if (stream) n |= 8;
// set listening 5th bit
if (listening) n |= 16;
// Setting up the version bit
n |= (version_ << 8);
/* Finished the protocol header setup */
byte[] header = toByteArray(n);
ByteBuffer buffer = ByteBuffer.allocate(16 + header.length + size.length + bytes.length);
buffer.put(protocol_);
buffer.put(header);
buffer.put(size);
buffer.put(bytes);
buffer.flip();
return buffer;
}