WebSocket can't connect to remote server

[tixiybob]

In my test I have one thread group.
Some http requests that do login.
And open WebSocket Sampler with wss protocol. Pass token to it.
It doesn't throw error. But in result i see that Cannot connect to the remote server.
What can be a reason?

Thread Name: Thread Group 1-1
Sample Start: 2017-03-20 17:52:34 IST
Load time: 15008
Connect Time: 0
Latency: 0
Size in bytes: 17905
Sent bytes:0
Headers size in bytes: 0
Body size in bytes: 17905
Sample Count: 1
Error Count: 0
Data type ("text"|"bin"|""):
Response code: 200
Response message:

[Execution Flow]

• Opening new connection
• Using response message pattern ""
• Using disconnect pattern ""
• Waiting for the server connection for 5000 MILLISECONDS
• Cannot connect to the remote server
• Waiting for messages for 10000 MILLISECONDS
• Leaving streaming connection open

[Variables]

• Message count: 0

[Problems]

Response headers:

SampleResult fields:
ContentType:
DataEncoding: UTF-8

[1renwuruiming]

do you solve the issue?what did you do ?