sendRequest method
Implementation
@override
void sendRequest(OutputStream out, int requestId, ReplyHandle handle) {
assert(!replyHandleMap.containsKey(requestId));
replyHandleMap[requestId] = handle;
final buf = out.finished();
if (validated) {
send(buf);
} else {
connectionValidated.future.then((v) {
send(buf);
});
}
}