Hi guys, I'm making some multi-sig contract, and I want to know how can I request my app user to make signature.

I'm testing my contract with 'mnemonicToWalletKey' exported from 'ton-crypto' so that I can get my private key, but I'm wondering

how can I request user tonkeeper to sign some data?
and
above all is it possible to request user tonkeeper to send external message to some contract?

There's no way to request a signature of custom data yet in tonkeeper.

And about external messages - you can send them from the browser or from anywhere else

Did you know about the official multisig contract by the way?
https://github.com/ton-blockchain/multisig-contract

yeah, I read it and making my own contract now

thx a lot! maybe I should use internal msg...

So if you do:
.store_uint(0, 3).store_uint(1, 2)

You'll have a cell that has "00011" bits value

And .load_uint() loads the values from the beginning of the slice. So:
a = s.load_uint(2); ;; '00'
b = s.load_uint(3); ;; '011'

If you store and load in the same order, you'll get the values correctly for sure

Thank you, now I understand it better!

I have some questions about external msg.

what I understood is that external msg doesn't carry value. but I know that if contract not 'accept_message()', the gas fee (like computation fee) is deducted from msg gas credit.
I think it is contradiction and I am misunderstanding it.

If contract does not accept external message, it looks like it never existed in blockchain (maybe except deployment message).

but isn't it okay if gas_credit is enough for computation even if contract doesn't 'accept_message()'?

I understood that the fee is deducted

from msg gas credit before 'accept_message()' and

from contract balance after 'accept_message()'

and if I'm right, I'm wondering where the gas credit came from, cause It is external msg

It's only credit: it has to be returned from contract's balance.

thanks bro. can you check did I understand rightly?

1. external msg carries msg without value and all the fee is due of contract

2. 'accept_message()' only means that I credit the msg so that I'll set gas limit sufficiently

3. in the forwarding gas fee point of view, the difference of external and internal msg is that external msg is up to contract(receiver), and internal is up to sender

4. so that the total (sender + contract) gas fee for external msg will be equivalent to that of internal msg

is it right?

accept_message() call means that contract confirms to pay for the fee for this message

Thanks a lot! Have a good day~

I wonder how can I store strings in the contract?
or some class?
Ex:
class student:
string name;
int mark;

You can store strings as slices https://ton.org/docs/develop/func/literals_identifiers#string-literals
you also can use these strings to send text comments in messages
:
slice my_string = "Hello world!";

...
builder msg_body = begin_cell().store_uint(0,32) ;; specify that it is a comment
.store_slice(my_string);

Also if you want to send a message with long comment (128+ characters), check this docs page:
https://ton.org/docs/develop/func/cookbook#how-to-send-a-message-with-a-long-text-comment

Thanks!

Maybe, separate kind of serializing strings should be added in FunC compiler, that would include those 32 zero bits in slice to reduce instructions count?

Concatenation of such strings become less obvious, store_comment/store_text_comment helper looks more appropriate choice here

Yes, however I honestly don't know how store_comment could modify passed slice, especially if it's not literal but rather generated in runtime.

👍🏿

What kind of situation will we get this? No response error code etc.

I think only because my contract didn't have better return message when I send the message?

why having this error when sending the message?

generated link is too long, use mnemonic

in the complex contracts, those with long code (green chars in background), for any operations those needs code, mnemonic is the best option. because you should send code too.

Thanks!

By the way, is there proper way to import the FunC Hex result? Right now it's mannuall paste is annoying for me

any chance that the sendMessage in FunC with mode 64 without need put the value right?

🌊 🫡 🥹

() send_text_message( slice to_addr, int value, int mode, builder content) impure {
var body = begin_cell()
.store_uint(0, 32)
.store_builder(content)
.end_cell();

var msg = begin_cell()
.store_uint(0x10, 6) ;; nobounce
.store_slice(to_addr)
.store_coins(value)
.store_uint(1, 1 + 4 + 4 + 64 + 32 + 1 + 1)
.store_ref(body)
.end_cell();

send_raw_message(msg, mode);
}

I need to put return() in the end.....

throw(0)

Another approach is to throw(0xffffff) at the end if none of the if conditions are met.

Is it possible that the first tx has already deployed, and then you sent another deployment message to this contract?🤔

trying on a new wallet now

any way to check the status?

I meant using @ton/ton

in JS

I haven't used @ton/ton to check, but I have used tonsdk to do so.

how do I deploy the wallet tho?

anyway to get the toncoin current price in usd?

Do you want to get the price within the Contract, or retrieve it in JS?

just any API

for current price of toncoin

thought coingecko might have it but nope

TON website lists some exchanges that provide TON prices, and you can access the price through the exchange's API.

there's no direct way of getting price in USDT so what I did is that I get the price of a pool of TON and jUSDT

https://help.crypt.bot/crypto-pay-api#getExchangeRates