Nethermind for Gnosis throwing WebSockets errors #10069
Description
Description
Nethermind nodes throwing WebSockets error WebSocket not open (Aborted) System.IO.IOException which is causing clients to disconnect.
Additional context
We are running: nethermind:1.35.8
We had these errors when the nodes are syncing fine without any resources spikes. RPS was stable ~1600. Node configuration:
"--config=/config/gnosis_archive.json",
"--baseDbPath=/root/.nethermind",
"--HealthChecks.Enabled=true",
"--HealthChecks.UIEnabled=true",
"--Pruning.Enabled=false",
"--JsonRpc.Enabled=true",
"--JsonRpc.Host=0.0.0.0",
"--JsonRpc.Port=8545",
"--JsonRpc.WebSocketsPort=8546",
"--JsonRpc.EngineHost=0.0.0.0",
"--JsonRpc.EnginePort=8551",
"--JsonRpc.EnabledModules=Eth,Subscribe,Trace,Debug,TxPool,Web3,Personal,Proof,Net,Parity,Health,Rpc",
"--JsonRpc.EngineEnabledModules=Eth,Subscribe,Trace,TxPool,Web3,Personal,Proof,Net,Parity,Health",
"--JsonRpc.JwtSecretFile=/root/.nethermind/jwt.secret",
"--Metrics.Enabled=true",
"--Metrics.ExposePort=5055",
"--Metrics.IntervalSeconds=5",
"--Network.DiscoveryPort=30303",
"--Pruning.CacheMb=6144",
"--Merge.Enabled=true",
Full Logs
2025-12-25 21:20:30.3137|ERROR|WebSockets error WebSocket not open (Aborted) System.IO.IOException: WebSocket not open (Aborted)
at Nethermind.Sockets.WebSocketMessageStream.WriteAsync(ReadOnlyMemory`1 buffer, CancellationToken cancellationToken) in /nethermind/src/Nethermind/Nethermind.Sockets/WebSocketMessageStream.cs:line 68
at Nethermind.Sockets.WebSocketMessageStream.WriteAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken) in /nethermind/src/Nethermind/Nethermind.Sockets/WebSocketMessageStream.cs:line 62
at System.IO.Stream.Write(ReadOnlySpan`1 buffer)
at Nethermind.Serialization.Json.CountingStreamPipeWriter.FlushInternal(Boolean writeToStream) in /nethermind/src/Nethermind/Nethermind.Serialization.Json/StreamPipeWriter.cs:line 428
at Nethermind.Serialization.Json.CountingStreamPipeWriter.Advance(Int32 bytes) in /nethermind/src/Nethermind/Nethermind.Serialization.Json/StreamPipeWriter.cs:line 129
at System.Text.Json.Utf8JsonWriter.Grow(Int32 requiredSize)
at System.Text.Json.Utf8JsonWriter.WriteRawValueCore(ReadOnlySpan`1 utf8Json, Boolean skipInputValidation)
at Nethermind.Serialization.Json.ByteArrayConverter.Convert(Utf8JsonWriter writer, ReadOnlySpan`1 bytes, WriteHex writeAction, Boolean skipLeadingZeros, Boolean addQuotations, Boolean addHexPrefix) in /nethermind/src/Nethermind/Nethermind.Core/JsonConverters/ByteArrayConverter.cs:line 208
at Nethermind.Serialization.Json.ByteArrayConverter.Write(Utf8JsonWriter writer, Byte[] bytes, JsonSerializerOptions options) in /nethermind/src/Nethermind/Nethermind.Core/JsonConverters/ByteArrayConverter.cs:line 183
at System.Text.Json.Serialization.JsonConverter`1.TryWrite(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state)
at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.GetMemberAndWriteJson(Object obj, WriteStack& state, Utf8JsonWriter writer)
at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryWrite(Utf8JsonWriter writer, T value, JsonSerializerOptions options, WriteStack& state)
at System.Text.Json.Serialization.JsonConverter`1.TryWrite(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state)
at System.Text.Json.Serialization.JsonConverter`1.TryWriteAsObject(Utf8JsonWriter writer, Object value, JsonSerializerOptions options, WriteStack& state)
at System.Text.Json.Serialization.JsonConverter`1.TryWrite(Utf8JsonWriter writer, T& value, … [message truncated due to size]