writeMessageHeaderTo method
Implementation
void writeMessageHeaderTo(BsonBinary buffer) {
buffer.writeInt(messageLength); // messageLength will be backpatched later
buffer.writeInt(requestId);
buffer.writeInt(0); // responseTo not used in requests sent by client
buffer.writeInt(opcode);
if (messageLength < 0) {
throw MongoDartError('Error in message length');
}
}