// Request a PQ pair number
function requestPQ(callback, connection) {
// Create a nonce for the client
var clientNonce = utility.createNonce(16);
mtproto.service.req_pq({
props: {
nonce: clientNonce
},
conn: connection,
callback: function (ex, resPQ) {
if (clientNonce === resPQ.nonce) {
var context = {
resPQ: resPQ,
connection: connection
};
callback(null, context);
} else {
callback(createError('Nonce mismatch.', 'ENONCE'));
}
}
});
}
// Request server DH parameters
function requestDHParams(callback, context) {
var resPQ = context.resPQ;
mtproto.service.req_DH_params({
props: {
nonce: resPQ.nonce,
server_nonce: resPQ.server_nonce,
p: context.pBuffer,
q: context.qBuffer,
public_key_fingerprint: context.fingerprint,
encrypted_data: context.encryptedData
},
conn: context.connection,
callback: function (ex, serverDHParams, duration) {
if (ex) {
logger.error(ex);
if (callback) {
callback(ex);
}
} else {
if (serverDHParams.typeName === 'mtproto.type.Server_DH_params_ok') {
if (logger.isDebugEnabled()) {
logger.debug('\'Server_DH_params_ok\' received from Telegram.');
}
context.serverDHParams = serverDHParams;
context.reqDHDuration = duration;
callback(null, context);
} else if (serverDHParams.typeName === 'mtproto.type.Server_DH_params_ko') {
logger.warn('\'Server_DH_params_ko\' received from Telegram!');
callback(createError(JSON.stringify(serverDHParams), 'EDHPARAMKO'));
} else {
var msg = 'Unknown error received from Telegram!';
logger.error(msg);
callback(createError(msg, 'EUNKNOWN'));
}
}
}
});
}