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Article - CS352971

"Server socket error: Couldn't bind address" is seen in the ThingWorx Edge MicroServer (EMS) logs

Modified: 17-Sep-2021   


Applies To

  • ThingWorx Edge MicroServer 5.4 to 5.4.9
  • ThingWorx Platform 8.5 to 9.5

Description

  • Cannot get the Edge MicroServer (EMS) HTTP Server to start and bind successfully
  • EMS connects to ThingWorx Platform without issue but the HTTP Server will not start
  • LuaScriptResource (LSR) is unable to bind to the EdgeMicroServer (EMS)
  • LSR cannot connect to the EMS
  • While trying to ping a new device connected to the LSR, there is no response and it eventually times out
    • LSR does not seem to be able to connect to the EMS
  • Cannot bind the EMS HTTP Server on port 8000 but other ports work as expected
  • EMS shows the following in the <Edge Microsever>\logs\wsems_log.log file:
    • [ERROR] <Date Time> httpserver: Server socket error: Couldn't bind address [<EMS Host>:<EMS HTTP Server Port>]
  • LSR shows the following in the <Edge Microsever>\logs\luaScriptResource_log.log file
    • [DEBUG] <Date Time> SDK: twTlsClient_ConnectSession: Connecting to server
      [ERROR] <Date Time> SDK: TW_NEW_SSL_CLIENT: SSL handshake error. Error: error:00000000:lib(0):func(0):reason(0).
      [ERROR] <Date Time> HttpClient::initialize: Exception while opening connection request to <EMS Host>. Error: Error initializing socket [<EMS Host>:<EMS HTTP Server Port>]
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