[BUG] Can't create pool size larger that 3 and can't get over a threshold speed.

[rushi3691]

Describe the bug
Whenever i give pool value greater than 3 like --pool 4 while downloading, it run for few seconds, then the program terminates itself. Also I've tried many ways to increase the speed. but its not getting above 3.5MBps (which is the highest I've recorded). But on telegram desktop i can get the maximum speed as of my wifi(which is about 9-10MBps).
Since the pool value is 3 by default, i guess, it gets 1MBps per connection. In my opinion to get maxium throughput, the number of pool connection must also be higher.

To Reproduce
tdl dl -f result.json --pool 4

Expected behavior
I should be able to get as much speed as desktop client.

I also want to contribute to this project. Let me know what I need to know and how can I help in any way.

[iyear]

Excessively large thread pools or thread counts will force the connection to be closed by the Telegram server side. Download speed has always been a black box, especially when downloading across DCs is slow.

I don't know what the cause is at the moment.

[iyear]

My guess is that the Telegram server treats the client's connection traits differently. That's why the official client tends to be faster across DCs. But I don't know exactly why.

Contributions are also very welcome. Documentation, code, use cases, uploads to other package management tools are all fine.

[roskyz]

Probably due to networking problem. No problems were found as regards direct connection.

• Try to setup the --proxy parameter to access the telegram gateway through the proxy.
• Start download tasks for a while, then manually restart the proxy server.
• Problem occurred. In addition, the download speed could drop randomly compared with direct connection.

FYI: gotd/td#1030

[iyear]

Please upgrade to v0.13.0 and feel free to reopen the issue if you have any questions.