Client 0.30.0 contains an update to jsonrpsee which deprecates the old HTTP RPC endpoint and hard-codes the max connections to that port to 100. Everyone should plan to use the WS port (default is 9944) for both HTTP and WS connections to the RPC service going forward. The startup flags to use are --ws-port and --ws-max-connections, which adjusts the combined HTTP + WS connection limit. The http counterparts have been deprecated.
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