Yes, Pranav. All TWS API clients that want to communicate with the capabilities of API 10.35.01 (server version 201) and higher will have to be able to send and receive protobuf formatted messages. IBKR has made those changes for all languages they support (including the IBKR Python API), but independently developed APIs including ib_async will have to add those capabilities eventually as well, or they are limited to requests, responses, and classes available in 10.34.02.
For the foreseeable future, clients that implement API 10.34.02 or below will still be able to communicate with TWS/IBGW 10.35 and above. That may be sufficient for many users for quite some time.
In API 10.35.01, IBKR has added protobuf formatted messages for the following items (though the original messages are still supported for clients with APs below 10.35):
- one request: reqExecutions()
- two responses: execDetails() and execDetailsEnd()
- five classes: ComboLeg, Contract, DeltaNeutralContract, Execution, and ExecutionFilter
The classes and functionality of the request and the responses are identical to those in 10.34.02, except that ExecutionFilter in 10.35 has two new fields: the interger field "lastNDays" and the list "specificDates".
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On Thu, Apr 3, 2025 at 07:20 PM, Pranav Lal wrote:
Hi Richard,
I see from the documentation that python is supported by protocol buffers. Does this mean that third party APIs like ib_async are impacted by this change?
Pranav
