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Show All 16 Lines	bool PeerManager::addNode(NodeId nodeid, const Proof &proof,
const Delegation &delegation) {		const Delegation &delegation) {
auto it = fetchOrCreatePeer(proof);		auto it = fetchOrCreatePeer(proof);
if (it == peers.end()) {		if (it == peers.end()) {
return false;		return false;
}		}

const PeerId peerid = it->peerid;		const PeerId peerid = it->peerid;

DelegationState state;		// This can only be wrong if proof-delegation pairing is broken in the
CPubKey pubkey;		// network layer.
if (!delegation.verify(state, proof, pubkey)) {		if (proof.getId() != delegation.getProofId()) {
return false;		return false;
}		}

		auto delegationMaster = delegation.getMaster();
		CPubKey pubkey = delegationMaster ? *delegationMaster : proof.getMaster();

auto nit = nodes.find(nodeid);		auto nit = nodes.find(nodeid);
if (nit == nodes.end()) {		if (nit == nodes.end()) {
if (!nodes.emplace(nodeid, peerid, std::move(pubkey)).second) {		if (!nodes.emplace(nodeid, peerid, std::move(pubkey)).second) {
return false;		return false;
}		}
} else {		} else {
const PeerId oldpeerid = nit->peerid;		const PeerId oldpeerid = nit->peerid;
if (!nodes.modify(nit, [&](Node &n) {		if (!nodes.modify(nit, [&](Node &n) {
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