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Metatrader 4 API in C++

  • #21
  • Mar 31, 2020 10:44am Mar 31, 2020 10:44am
Check this link: https://www.darwinex.com/en/algorith...omq-metatrader
I think that is what you are looking for ... And it is free.
  • #22
  • Mar 31, 2020 10:57am Mar 31, 2020 10:57am
Quoting migueldulcey
Check this link: https://www.darwinex.com/en/algorith...omq-metatrader I think that is what you are looking for ... And it is free.
That's just the usual rubbish where a client talks to an MQL EA instead to an API.
It takes blood, sweat and enough tears to wash away the blood.
  • #23
  • May 11, 2020 8:20am May 11, 2020 8:20am
Quoting emmzett
{quote} Because there are projects who cannot afford running hundreds of terminals parallel just to get updated account information. Think of FxBlue, for example. Another example is if you want to aggregate prices.

Hi Emmzett,
Can please explain me how does FXblue retrieves the data. I'm really trying to develop something like that for my self. I would like to be able to see all that type of data for each and every account.

Thanks
  • #24
  • May 11, 2020 8:49am May 11, 2020 8:49am
Quoting ArpanMate
{quote} Hi Emmzett, Can please explain me how does FXblue retrieves the data. I'm really trying to develop something like that for my self. I would like to be able to see all that type of data for each and every account. Thanks
Their main developer is a very skilled person. I can only guess that he wrote something like the MT4 Server API for himself. I'm not affiliated to him.
It takes blood, sweat and enough tears to wash away the blood.
  • #25
  • May 11, 2020 9:59am May 11, 2020 9:59am
Quoting emmzett
{quote} Their main developer is a very skilled person. I can only guess that he wrote something like the MT4 Server API for himself. I'm not affiliated to him.

That's intresting. I have tough to make an EA that can do the same thing collect data and store it externally to create an offline database. As you know this method has got it's downside and that is the latency. I'm uncertain there isn't any other way?

Is there not any type of bridge like in the example below?

Api --- language java ----- translation java to c++ -- c++

C++ ----- translation java to c++ ---- language java --- Api
  • #26
  • Edited 11:31am May 11, 2020 11:08am | Edited 11:31am
Quoting ArpanMate
{quote} That's intresting. I have tough to make an EA that can do the same thing collect data and store it externally to create an offline database. As you know this method has got it's downside and that is the latency. I'm uncertain there isn't any other way? Is there not any type of bridge like in the example below? Api --- language java ----- translation java to c++ -- c++ C++ ----- translation java to c++ ---- language java --- Api
I didn't mention any specific language. You may include as many layers in as many different languages as you want but that doesn't change a thing. The FX Blue backend is most probably not written in C++. All you need is the capability to handle network connections, so you may use Python or PHP or even NodeJS (if you want).

Trying to use MQL is a dead-end as MQL is not a high-level language and doesn't offer advanced features like C++. Most important it lacks standard error handling mechanisms. That's why it's a no-go for network communication.

I'd recommend to play with the MT3 API I uploaded in the beginning of the thread to get an understanding what an API is and how to work with one. Another option would be to go the other way around. Install Wireshark, MT4 build 225 and the public MT4 Datacenter and look what happens when both communicate to each other. The datacenter behaves to the MT4 terminal like a real trade server does. Both attachments are not obfuscated, so they are easy to analyze.
Attached File(s)
File Type: zip mt4terminal-4.225.zip   4.3 MB | 1,149 downloads
File Type: zip mt4datacenter-4.350.zip   325 KB | 967 downloads
It takes blood, sweat and enough tears to wash away the blood.
  • #27
  • May 11, 2020 11:45am May 11, 2020 11:45am
MT5 has a direct terminal API using python. https://www.forexfactory.com/showthread.php?t=991133
  • #28
  • May 19, 2020 7:07am May 19, 2020 7:07am
see here, think it's open source: http://mtapi4.net/
  • #29
  • May 19, 2020 8:27am May 19, 2020 8:27am
Quoting tradista
see here, think it's open source: http://mtapi4.net/
Let me also repeat to you (nothing personal) from my post #22:

Quoting emmzett
...That's just the usual rubbish where a client talks to an MQL EA instead to an API...
At the moment it seems the only real MT4 APIs available are offered by mt4serverapi.com and mtapi.tech, the latter providing code examples in different languages.
It takes blood, sweat and enough tears to wash away the blood.
  • #30
  • May 19, 2020 9:12am May 19, 2020 9:12am
Quoting emmzett
{quote} Let me also repeat to you (nothing personal) from my post #22: {quote} At the moment it seems the only real MT4 APIs available are offered by mt4serverapi.com and mtapi.tech, the latter providing code examples in different languages.
thanks, wasn't actually aware of that detail.
  • #31
  • Edited Mar 22, 2024 7:43am Jun 6, 2020 3:50pm | Edited Mar 22, 2024 7:43am
Quoting emmzett
...At the moment it seems the only real MT4 APIs available are offered by mt4serverapi.com and mtapi.tech, the latter providing code examples in different languages.
Attached the current C# documentation of the available MT4 server API.
{ copyrighted attachment deleted by staff }

And an example of pulling and displaying current prices and sending a market order to buy 0.1 lot EURUSD in PHP:
{ copyrighted attachment deleted by staff }
It takes blood, sweat and enough tears to wash away the blood.
  • #32
  • Jun 7, 2020 7:28am Jun 7, 2020 7:28am
Quoting emmzett
{quote} Attached the current C# documentation of the available MT4 server API. {image} And an example of pulling and displaying current prices and sending a market order to buy 0.1 lot EURUSD in PHP: {image}
Where can one see the source code for MT4ServerAPI.dll?
  • #33
  • Jun 7, 2020 7:31am Jun 7, 2020 7:31am
Quoting Nicholishen
{quote} Where can one see the source code for MT4ServerAPI.dll?
It's metaquotes dll. I don't think have public source but if you have luck you can find dll for work without terminals. I have 1190 build ( if I'm not wrong ) downloaded from only web provided it before metaquotes close it. But problem is documentation. Without have server license you can't get it ( I never found it free )
Try don't lose pants never...
  • #34
  • Jun 7, 2020 7:43am Jun 7, 2020 7:43am
The reason I ask is because I'm slightly skeptical that http://mtapi.tech/ is actually directly communicating with both the MT4 and MT5 trade servers, and where else are your account login credentials going? No way to know without seeing the source.
  • #35
  • Jun 7, 2020 7:47am Jun 7, 2020 7:47am
Quoting Nicholishen
The reason I ask is because I'm slightly skeptical that http://mtapi.tech/ is actually directly communicating with both the MT4 and MT5 trade servers, and where else are your account login credentials going? No way to know without seeing the source.
Look is white label license ( reseller ). But when I asked metaquotes how buy a license they told me I have ask my broker. Honestly I don't understand well how works this area. I don't understand why metaquotes don't sell directly if it's their product

PS: I saw that dll is a wrapper. Original metaquotes dll is mtmanaapi.dll
Try don't lose pants never...
  • #36
  • Edited 8:31am Jun 7, 2020 8:02am | Edited 8:31am
Quoting Nicholishen
The reason I ask is because I'm slightly skeptical that http://mtapi.tech/ is actually directly communicating with both the MT4 and MT5 trade servers, and where else are your account login credentials going? No way to know without seeing the source.
You have to buy the sources (you don't want to). It's not MetaQuotes' API, it's reverse engineered from the original protocol. The reason I say this is that there are plenty of unknown members in some codes which are named dummy_offset[size]. Official documentation would look different. From what I see this API is of the same origin as the one which got blocked by MetaQuotes about 6 years ago (the sources in the provided examples go back until 2013). It's definitely not a new product.

I did not yet test with Wireshark but as you can buy the full sources I'm optimistic the API is talking directly to the MT4/MT5 servers. If I find some time I run the demos with a network sniffer. They are free for two weeks with trading functionality disabled. You can also make the online test on their website to see that the API is talking to your account company. However that doesn't mean a lot.

What I'm curious about: 6 years ago MetaQuotes first blocked the IPs using that API directly in the server (hardcoded, clients couldn't do anything against it), then they slightly changed the protocol. How can somebody sell such an API if MetaQuotes could do the same at any given day?
It takes blood, sweat and enough tears to wash away the blood.
  • #37
  • Jun 7, 2020 8:06am Jun 7, 2020 8:06am
Quoting braintheboss
{quote} Look is white label license ( reseller ). But when I asked metaquotes how buy a license they told me I have ask my broker. Honestly I don't understand well how works this area. I don't understand why metaquotes don't sell directly if it's their product PS: I saw that dll is a wrapper. Original metaquotes dll is mtmanaapi.dll
The manager API is something completely different.
It takes blood, sweat and enough tears to wash away the blood.
  • #38
  • Jun 7, 2020 8:10am Jun 7, 2020 8:10am
Quoting emmzett
{quote} The manager API is something completely different.
You're right. I saw dll is different. Anyway you have some web offering this and they say are legal ( they offer white label license ). But pay 6000$ without be sure is risky
Try don't lose pants never...
  • #39
  • Edited Jun 8, 2020 7:58am Jun 7, 2020 9:39am | Edited Jun 8, 2020 7:58am
Quoting emmzett
...If I find some time I run the demos with a network sniffer...
Made a few quick tests and it looks partially fishy. They can indeed connect to some servers, to some not. Which tells me that they may already been blocked by MetaQuotes. More interesting: The API doesn't connect like a terminal would. If you request account data and after you login to the same account with a terminal o a different IP, then no previous login from somewhere else shows up. This tells me their API doesn't connect in the same way as a regular terminal.

Now in the old examples from years ago there is a lot of web request and REST API releated stuff. So at the moment I'm only guessing and it goes like that: They connect to the websocket API which many brokers in between offer, and not to the regular server API. Which would make some sense as the JavaScript stuff is way easier to reverse engineer than MetaQuotes's regular obfuscation. But it's only a guess.
It takes blood, sweat and enough tears to wash away the blood.
  • #40
  • Jun 8, 2020 7:41am Jun 8, 2020 7:41am
Quoting emmzett
{quote} Made a few quick tests and it looks partially fishy. They can indeed connect to some servers, to some not. Which tells me that they may already been blocked by MetaQuotes. More interesting: The API doesn't connect like a terminal would. If you request account data and after you login to the same account with a terminal o a different IP, then no previous login from somewhere else shows up. This tells me their API doesn't connect in the same way as a regular terminal. Now in the old examples from years ago there is a lot of web request and...
There is also the WebTerminal... perhaps it was that which was reversed engineered instead of the desktop terminal.
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