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doc: Add warnings for http interfaces limitations

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Fabian Jahr 2020-05-22 16:10:46 +02:00
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11
doc/JSON-RPC-interface.md
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@ -127,3 +127,14 @@ However, the wallet may not be up-to-date with the current state of the mempool
or the state of the mempool by an RPC that returned before this RPC. For
example, a wallet transaction that was BIP-125-replaced in the mempool prior to
this RPC may not yet be reflected as such in this RPC response.
## Limitations
There is a known issue in the JSON-RPC interface that can cause a node to crash if
too many http connections are being opened at the same time because the system runs
out of available file descriptors. To prevent this from happening you might
want to increase the number of maximum allowed file descriptors in your system
and try to prevent opening too many connections to your JSON-RPC interface at the
same time if this is under your control. It is hard to give general advice
since this depends on your system but if you make several hundred requests at
once you are definitely at risk of encountering this issue.

12
doc/REST-interface.md
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@ -12,6 +12,18 @@ REST Interface consistency guarantees
The [same guarantees as for the RPC Interface](/doc/JSON-RPC-interface.md#rpc-consistency-guarantees)
apply.
Limitations
-----------
There is a known issue in the REST interface that can cause a node to crash if
too many http connections are being opened at the same time because the system runs
out of available file descriptors. To prevent this from happening you might
want to increase the number of maximum allowed file descriptors in your system
and try to prevent opening too many connections to your rest interface at the
same time if this is under your control. It is hard to give general advice
since this depends on your system but if you make several hundred requests at
once you are definitely at risk of encountering this issue.
Supported API
-------------