if (version != 1) {

return -1;

}

// <n> [short] <pair_0> [string][string] ... <pair_n> [string][string]

size_t length = sizeof(uint16_t);

for (V1Authenticator::Credentials::const_iterator it = credentials_.begin(),

end = credentials_.end(); it != end; ++it) {

length += sizeof(uint16_t) + it->first.size();

length += sizeof(uint16_t) + it->second.size();

}

Buffer buf(length);

buf.encode_string_map(0, credentials_);

bufs->push_back(buf);

return length;

if (version < 2) {

return -1;

}

// <token> [bytes]

size_t length = sizeof(int32_t) + token_.size();

Buffer buf(length);

buf.encode_long_string(0, token_.data(), token_.size());

bufs->push_back(buf);

return length;