I would like to get advice from programmers on what are the ways to achieve the following.
1) Trader 1 places a market BUY order on his simulated account trading program;
2) At the same time as Trader 1 does the above, the software on his PC sends a market order to SELL same quantity to my PC, which has real account X_Trader platform;
3) and 4) are the opposite of the above 1) and 2) but to close position/s.
Thank you in advance
What if I send a 10,000,000 lot trade on my simulated account.