Web socket connection is failing with Invalid handshake response get Status: 400 Bad Request

MaheshM · March 15, 2023, 3:24pm

Hi
I’m trying to use web socket in my simulation like below

.exec(ws(“Connect WS”).connect(ws://localhost/Services/signalr/connect?clientProtocol=1.5)

But Its getting failed with error as

Invalid handshake response get Status: 400 Bad Request

Below is debug log for same

0:40:45.890 [DEBUG] i.g.h.a.w.WsConnect - Opening websocket 'gatling.http.webSocket': Scenario 'Account', UserId #1
20:40:45.903 [DEBUG] i.g.h.a.w.f.WsConnectingState$ - Connecting to ws://localhost/Services/signalr/connect?clientProtocol=1.5
20:40:45.909 [DEBUG] i.g.h.c.i.DefaultHttpClient - Opening new channel
20:40:45.930 [DEBUG] i.n.h.c.c.ZlibCodecFactory - -Dio.netty.noJdkZlibDecoder: false
20:40:45.930 [DEBUG] i.n.h.c.c.ZlibCodecFactory - -Dio.netty.noJdkZlibEncoder: false
20:40:45.950 [DEBUG] i.n.h.c.h.w.WebSocketClientHandshaker13 - WebSocket version 13 client handshake key: Ylnu79YNdFozRtbaqMoFbw==, expected response: FK8I/V304JdffL7fVAQiOOK6oAU=
20:40:45.951 [DEBUG] i.g.h.c.i.WebSocketHandler - ctx.write msg=DefaultFullHttpRequest(decodeResult: success, version: HTTP/1.1, content: EmptyByteBufBE)
GET /Services/signalr/connect?clientProtocol=1.5 HTTP/1.1
accept: */*
host: localhost
upgrade: websocket
connection: upgrade
sec-websocket-key: Ylnu79YNdFozRtbaqMoFbw==
origin: http://localhost
sec-websocket-version: 13
20:40:45.961 [DEBUG] i.g.h.c.i.WebSocketHandler - Read msg=HttpObjectAggregator$AggregatedFullHttpResponse(decodeResult: success, version: HTTP/1.1, content: CompositeByteBuf(ridx: 0, widx: 44, cap: 44, components=1))
HTTP/1.1 400 Bad Request
Cache-Control: no-cache
Pragma: no-cache
Content-Type: text/html
Expires: -1
X-Content-Type-Options: nosniff
Date: Wed, 15 Mar 2023 15:10:45 GMT
content-length: 44
20:40:45.962 [DEBUG] i.g.h.c.i.WebSocketHandler - Crash
io.netty.handler.codec.http.websocketx.WebSocketClientHandshakeException: Invalid handshake response getStatus: 400 Bad Request
	at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker13.verify(WebSocketClientHandshaker13.java:312)
	at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker.finishHandshake(WebSocketClientHandshaker.java:364)
	at io.gatling.http.client.impl.WebSocketHandler.channelRead(WebSocketHandler.java:131)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:93)
	at io.netty.handler.codec.http.websocketx.extensions.WebSocketClientExtensionHandler.channelRead(WebSocketClientExtensionHandler.java:125)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
	at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.lang.Thread.run(Unknown Source)
20:40:45.963 [DEBUG] i.g.h.a.w.f.WsConnectingState - WebSocket crashed by the server while in Connecting state
io.netty.handler.codec.http.websocketx.WebSocketClientHandshakeException: Invalid handshake response getStatus: 400 Bad Request
	at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker13.verify(WebSocketClientHandshaker13.java:312)
	at io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker.finishHandshake(WebSocketClientHandshaker.java:364)
	at io.gatling.http.client.impl.WebSocketHandler.channelRead(WebSocketHandler.java:131)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:93)
	at io.netty.handler.codec.http.websocketx.extensions.WebSocketClientExtensionHandler.channelRead(WebSocketClientExtensionHandler.java:125)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
	at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.lang.Thread.run(Unknown Source)

verified URL in detail and nothing wrong with the URL info.

slandelle · March 15, 2023, 4:03pm

verified URL in detail and nothing wrong with the URL info.

Still, that’s really what 400 Bad Request means: some parameter is missing. connectionData maybe?

Anyway, I won’t be able to help personally, all the more if you don’t provide a reproducer, I’m not familiar with SignalR.

MaheshM · March 15, 2023, 4:27pm

Thanks for the quick check. Will try to check in detail again! It seems this is where exception is thrown

io/netty/handler/codec/http/websocketx/WebSocketClientHandshaker13.java

slandelle · March 15, 2023, 5:53pm

Yes, the server replied with 400 bad request instead of the expected 101 Switching protocol when trying to open the websocket. This happens because the connect request misses some parameters the server is expecting.

MaheshM · March 27, 2023, 8:11am

yeah, you are right it seems I messed up in request it self. Its working now

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Web socket connection is failing with Invalid handshake response get Status: 400 Bad Request

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