Problem Description: the websocket project was well deployed before. When it was transplanted to the domain name specified by the government cloud SLB, an error occurred:
error during websocket handshake unexpected response code 404
Solution
1. Configure nginx
In any case, configure nginx:
proxy_http_version 1.1;
proxy_set_header Connection "upgrade";
proxy_set_header Upgrade $http_upgrade;
location /xxx{
proxy_pass http://127.0.0.1:7071/xxx;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_http_version 1.1;
proxy_set_header Connection "upgrade";
proxy_set_header Upgrade $http_upgrade;
proxy_connect_timeout 60s;
proxy_read_timeout 7200s;
proxy_send_timeout 600s;
# 再不行的话就把下面的设置试一下
#proxy_set_header Upgrade websocket;
#proxy_pass_request_headers on;
#access_log off;
#proxy_buffering off;
}
2. Websocket configuration
We use springboot, and all configurations cannot be less
import com.fh.websocket.session.MySpringConfigurator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;
/**
* enable WebSocket support
*/
@Configuration
public class WebSocketConfig {
@Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
@Bean
public MySpringConfigurator mySpringConfigurator() {
return new MySpringConfigurator();
}
}
3. Websocketserver needs to add a parameterless constructor
This is a pit, and it is normal to deploy to another
transplanting will not work in the past.
