I am using fiddler(version v4.6.3.44034) to capture network traffic of websocket,but the content is unreadable code.Like this:
PayloadString: �Vr���su��KLNN-(�-K-*��ϳ2�3�1�3���HM,*�MJM,�2413:20:24:4763 WSSession87.WebSocket'WebSocket #87'
MessageID: Server.3
MessageType: Text
PayloadString: J�Vr���suqu��+K-*��ϳ2�3���HM,*�MJM,�2�1��+-N-��K�M�JL��̋�R P�13:20:28:5903 WSSession87.WebSocket'WebSocket #87'
MessageID: Client.4
MessageType: Text
PayloadString: �V
u
v�tr���L�*.M�*HI-.��K,��_�_�������M,)-F613:20:28:5953 WSSession87.WebSocket'WebSocket #87'
MessageID: Client.5
MessageType: Text
PayloadString: t�?o�1ƿ��X��q��ЁnL�c�m+�G՞XP�;>�"e���?���p{����W�����*_��a���t���tw�?/�ߏ�Ա��}�>���x^�L�w�ç�x�է�����p:�2�z}N�WΛ�o�2y� ��m0�TXM��u�E�����з2��u��<P��>H�V�С��tp_�eR��z�*�\�*Ў]��z��Z��a�b�J,�
�����w��}�m��
W�fPԦb!-Ev��גR�%�Z�4��l�c`�ov�z��$� �6���x#��RAmmiU�!%
X�y�滠�fT`
How to make it right? I searching from google,no one encount the problem.
The problem is that Fiddler (in my case v4.6.20171.7553) is not uncompressing the websocket traffic. As a workaround, disable websocket compression on the server side. In my case, I was using tomcat and added this jvm option:
-Dorg.apache.tomcat.websocket.DISABLE_BUILTIN_EXTENSIONS=true
Note that disabling http compression in server.xml did not work for me.
See this link for additional information.
Related
I have an application that displays stats about packets in a pcap file. Here is a partial output from a run I did without filters:
192.168.42.4:5082-17.253.27.205:20480 88:66:5a:04:e0:76 00:80:ae:b2:1e:92 S.SA.A
I then ran again with a port filter for 5082 and got nothing, no packets were found.
here is the set filter I used on the reader:
reader->setFilter("port 5082");
reader->setFilter("host 192.168.42.4") and this works fine. I can get filters for MAC addresses, IP, and protocol to work. I can't get any filter with ports in it to work.
reader->setFilter("ost 192.168.42.4 and src port 5082") fails as well.
The following fails as well:
pcpp::PortFilter p(5082, pcpp::SRC_OR_DST);
if (!reader->setFilter(p)) {
fmt::print("Could not set up filter on file");
}
Note: 0 packets found, no error on setFilter.
Any ideas?
I found the problem. seladb question made me take a close look at the capture file. Some how the port numbers I am getting from pcapplusplus are not the same as in the capture as displayed by Wireshark. Now I will have to go back and figure out why my port number from pcapplusplus is corrupt.
Thanks for your response.
I'm scripting for ISO Messages using JMeter to do Load Testing. I have used the ISO 8583 Sampler and connection configuration. All the data field by field is mapped correctly including the MTI (Field 0). But the issue is that the request is not being sent to the server from the JMeter. It just keep on giving the timeout issue and I'm getting no response against it. I've seen the request and validated it format from the implementer himself and he says that the format is correct. Can anyone help to trouble shoot this issue?
Check out Why am I getting timeouts? documentation section,
Why am I getting timeouts?
The three common reasons for response timeouts are:
The sampler does not receive any response.
The sampler does receive a response but fails to unpack it.
The sampler does receive a response and unpacks it but no request can be matched.
The debug log should contain Channel output similar to the following:
2022-02-22 12:34:56,789 DEBUG n.c.b.j.i.Q2: (channel/HOSTNAME:POST) [send] Out: 0800 000001
2022-02-22 12:34:56,987 DEBUG n.c.b.j.i.Q2: (channel/HOSTNAME:POST) [receive] In: 0810 000001
If only the first log line is present, no response was received (case 1 above). It is likely that the request is incorrectly formed and the remote system discarded it, so checking its logs/traces may be helpful. Double-check the Packager Configuration file! This defines how a request is packed (or response is unpacked) before (after) it goes over the wire.
If both lines are present, a response was in fact received (cases 2 and 3 above).
If the second log line instead contains an error like the following, then the response failed to unpack (case 2 above). Double-check the Packager Configuration file!
2022-02-22 12:34:56,987 ERROR n.c.b.j.i.Q2: (channel/HOSTNAME:POST) [receive] org.jpos.iso.SOMECLASSNAMEHERE: Problem unpacking field ...
If the second log line contains no error then it is likely that the plugin did not find a matching request (case 3 above). Double-check the Mux Settings! These define MTI values and message fields that are used for matching, and the default settings may not work.
In order to increase JMeter's logging verbosity for the ISO 8583 sampler add the next line to log4j2.xml file:
<Logger name="nz.co.breakpoint.jmeter.iso8583" level="debug" />
JMeter restart will be required to pick up the change.
Also make sure that you can reach the target server host/port from the machine where JMeter is running using a telnet client or equivalent.
We are running JMeter for connecting TCP Socket thorugh BinaryTCPClientImpl , We are getting the response code : 500
Response message: org.apache.jmeter.protocol.tcp.sampler.ReadException
JMeter Version : 2.9
Help out
If this is the error
ERROR - jmeter.protocol.tcp.sampler.TCPSampler: org.apache.jmeter.protocol.tcp.sampler.ReadException:
at org.apache.jmeter.protocol.tcp.sampler.BinaryTCPClientImpl.read(BinaryTCPClientImpl.java:140)
at org.apache.jmeter.protocol.tcp.sampler.TCPSampler.sample(TCPSampler.java:414)
at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:429)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:257)
at java.lang.Thread.run(Unknown Source)
then you have 2 options. The first (and much easier if it applies
to you) is to use the LengthPrefixedBinaryTCPClientImpl. If this
applies to you, that is, if your responses are always the same fixed
sizes, you can simply set the tcp.binarylength.prefix.length property
and go about your business.
If that is not the case, then your other option is to extend
org.apache.jmeter.protocol.tcp.sampler.TCPClient. It may help to get in
touch with the client team of this proprietary protocol, because after
all, they have implemented something that works. You'll probably have
to extend it to look something like LengthPrefixedBinaryTCPClientImpl
read N bytes. Although, this runs the risks of reading too many or too
few bytes. If your application server ever miscalculates the size of
it's output, you suffer the consequences by getting another timeout or
leaving extra bytes in the buffer and reading them on the next iteration
(and then cascading errors).
I am doing a websocket stress test through jmeter2.9.
When I send a request and response with a "light" json. the result is ok.
But when the response json contains a base64 png(about 360kb) . jmeter return code 204 No content (probably timeout).
Is my jmeter need some config here, or something else wrong.
If someone know something about this please teach me.
complete info:
Thread Name: threadgroup 1-1
Sample Start: 2013-07-17 15:36:06 CST
Load time: 20000
Latency: 0
Size in bytes: 0
Headers size in bytes: 0
Body size in bytes: 0
Sample Count: 1
Error Count: 1
Response code: 204
Response message: No content (probably timeout).
Response headers:
SampleResult fields:
ContentType:
DataEncoding:
Check if you are using Cache manager, there seems to be a (bug) in Jmeter that sets the response code to HTTP Code '204' ("No Response") while, there is no outgoing request, the information is retrieved from the Cache, try disabling cache manager and lets see if you can reproduce it then.
This could be because of the unhandled exception, response being larger than the maximum message size specified in the plugin code, etc. The exception which you see will be thrown if no response has been received from the server after predefined timeout.
Here is another WebSocket plugin for JMeter which might work for you
Link: https://github.com/maciejzaleski/JMeter
Features:
Supports HTTS/HTTPS (ws/wss) version of the WebSocket protocol
Option to ignore SSL certificate errors
Streaming allows for a single connection to remain open for the duration of the test
Response has to match predefined regular expression
Response timeout
Response message back log (build the Sampler response from multiple server messages)
Connection could be closed if server sends a mesage matching predefined regular expression
My XHR POST REQUEST is cut off. When I try to reload my page information is missing. Firebugs sends following message:
Firebug request size limit has been reached by Firebug.
My question is: What are my options?
Would it work if I declare the content.length in the header?
I added a line to my apache config file and restarted it: LimitRequestBody 0
I increased the size of transfer files in mysql config file
Or it is a browser issue?
The only solution I could think of was to cut the data in pieces and transmit the array one by one but I don't like this idea. The content length is 91691 according to firebug.
Any suggestions?
You just need to modify Firebug settings. In browser's address bar go to about:config, then look for option extensions.firebug.netDisplayedPostBodyLimit.
You should increase its value in order to see non truncated requests. Set it to 65535 for example.
Here you can find many other Firebug options you may want to change: http://getfirebug.com/wiki/index.php/Firebug_Preferences