By Lex Li
This page shows you how to troubleshoot common issues.
In this article:
Answer: First please follow server component installation steps to review if you have executed every steps.
Second, check the issues step by step,
Assume that we register the certificate to port 8088. Run the following command,
sudo httpcfg -list
You must see the port and certificate thumbprint listed which is similar to below,
Port: 8088 Thumbprint: 38A913B07B138730DC9B7B13DC4F51310ADC6C93
Otherwise, the certificate was not properly registered.
Assume that we are using a machine whose IP address if
the following command,
You can see the “inet address” for each network adapters, and learn which are the valid IP addresses you can use in service address.
netstat can be used to make sure the remote services instance is
monitoring the service address.
For example, if the remote services instance is launched by the following command,
mono RemoteServicesHost.exe https://0.0.0.0:8088
netstat should show that TCP port 8088 is being listened at,
netstat -an | grep "LISTEN " tcp 0 0 0.0.0.0:8088 0.0.0.0:* LISTEN
The port number used in service address must have a server certificate registered. Otherwise, the client cannot make an HTTPS connection to the server side.
Linux distributions normally come with built-in firewall products. So
exceptions for the port chosen for Jexus Manager server component must be
made. You have to refer to the corresponding distro or firewall manuals to
learn how to create such firewall exceptions. If you choose port
then TCP access to that port must be registered as an exception.
If the client/server connection goes through the Internet, you should be even
more caution that sometimes the connection can be blocked unexpectedly. Try to
use another port number (such as
12345) and try again.
On Ubuntu the following command can be used if you use the default firewall,
sudo ufw allow 8088
The service address (such as https://192.168.18.129:8088) and user credentials (jexus|lextudio.com) can be used to test out the server component availability via curl or WFetch.
Header: “X-HTTP-Authorization: jexus|lextudio.com”
The curl command can be
curl --header "X-HTTP-Authorization: jexus|lextudio.com" -k https://192.168.18.129:8088/api/server
The server should reply with 200 if configuration is correct.
Answer: JexusManager.exe writes the exception details to a file named “debug”. Open it and you will see the information.
For Jexus Manager 2.0 and above, this debug log file is located at
My Documents\Jexus Manager\temp\debug.
What is the cause of “System.Reflection.TargetInvocationException” when starting/stopping Jexus Manager Remote Services?¶
Answer: If the exception details match below, then please make sure you pass a valid service address to RemoteServicesHost.exe.
Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Net.Sockets.SocketException: The requested address is not valid in this context at System.Net.Sockets.Socket.Bind (System.Net.EndPoint local_end) [0x00000] in <filename unknown>:0 at System.Net.EndPointListener..ctor (System.Net.IPAddress addr, Int32 port, Boolean secure) [0x00000] in <filename unknown>:0 at System.Net.EndPointManager.GetEPListener (System.String host, Int32 port, System.Net.HttpListener listener, Boolean secure) [0x00000] in <filename unknown>:0 at System.Net.EndPointManager.AddPrefixInternal (System.String p, System.Net.HttpListener listener) [0x00000] in <filename unknown>:0 at System.Net.EndPointManager.AddListener (System.Net.HttpListener listener) [0x00000] in <filename unknown>:0