SharePoint Basic Connection Test Failed - Connection refused: connect

Symptoms

  1. Unable to establish a connection between Confluence server and Sharepoint 2007
  2. "Basic Connection Test Failed:: Connection refused: connect" error while conducting "test connection" (under the Sharepoint Admin in Confluence)

The following appears in the atlassian-confluence.log:

2012-01-05 14:39:13,472 ERROR [http-443-7] [extra.sharepoint.ws.WebServiceAccessorImpl] testConnection Test Connection failed!
 -- url: /admin/sharepoint-admin/testConnection.action | userName: admin | referer: https://wiki/admin/sharepoint-admin/updateAlias.action | action: testConnection
java.net.ConnectException: Connection refused: connect
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
	at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
	at java.net.Socket.connect(Socket.java:529)
	at sun.net.NetworkClient.doConnect(NetworkClient.java:158)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
	at sun.net.www.http.HttpClient.<init>(HttpClient.java:233)
	at sun.net.www.http.HttpClient.New(HttpClient.java:306)
	at sun.net.www.http.HttpClient.New(HttpClient.java:323)

Diagnosis

  1. Check the operating system that Confluence server is on. If it is Windows, the "Connection Refused" means Confluence couldn't connect to the Windows NTLM SOAP Proxy started by Confluence. If it is Unix or Mac, need to check on the network and firewall configuration, as Confluence is being prevented from connecting to SharePoint over the network.
  2. Check if something else is using this port by running the following command from a command prompt: netstat -a -b. Example output:

    C:\Windows\system32>netstat -a -b
    
    Active Connections
    
      Proto  Local Address          Foreign Address        State
      TCP    0.0.0.0:80             bluetongue:0           LISTENING
     Can not obtain ownership information
      TCP    0.0.0.0:135            bluetongue:0           LISTENING
      RpcSs
     [svchost.exe]
      TCP    0.0.0.0:389            bluetongue:0           LISTENING
     [dsamain.exe]
      TCP    0.0.0.0:445            bluetongue:0           LISTENING
     Can not obtain ownership information
      TCP    0.0.0.0:636            bluetongue:0           LISTENING
     [dsamain.exe]
      TCP    0.0.0.0:3389           bluetongue:0           LISTENING
      CryptSvc
     [svchost.exe]
      TCP    0.0.0.0:5357           bluetongue:0           LISTENING
     Can not obtain ownership information
      TCP    0.0.0.0:17500          bluetongue:0           LISTENING
     [Dropbox.exe]
      TCP    0.0.0.0:18798          bluetongue:0           LISTENING
     [Skype.exe]
      TCP    0.0.0.0:23284          bluetongue:0           LISTENING
     Can not obtain ownership information
      TCP    0.0.0.0:32843          bluetongue:0           LISTENING
     Can not obtain ownership information
      TCP    0.0.0.0:32844          bluetongue:0           LISTENING
     Can not obtain ownership information
      TCP    0.0.0.0:32846          bluetongue:0           LISTENING
     [SPUCHostService.exe]
      TCP    0.0.0.0:39045          bluetongue:0           LISTENING
     Can not obtain ownership information
      TCP    0.0.0.0:49152          bluetongue:0           LISTENING
     [wininit.exe]
      TCP    0.0.0.0:49153          bluetongue:0           LISTENING
      eventlog
     [svchost.exe]
      TCP    0.0.0.0:49154          bluetongue:0           LISTENING
     [lsass.exe]
      TCP    0.0.0.0:49155          bluetongue:0           LISTENING
      Schedule
     [svchost.exe]
      TCP    0.0.0.0:49157          bluetongue:0           LISTENING
     [dsamain.exe]
      TCP    0.0.0.0:49239          bluetongue:0           LISTENING
     [services.exe]
      TCP    0.0.0.0:49268          bluetongue:0           LISTENING
      PolicyAgent
     [svchost.exe]
      TCP    0.0.0.0:52885          bluetongue:0           LISTENING
     [idea.exe]
      TCP    127.0.0.1:4331         bluetongue:0           LISTENING
    


Cause

It looks like the technology we use to run the proxy (.NET's HttpListener) actually required admin privileges to run, because it depends on a sensitive HTTP access library built in to Windows. Details can be found here: https://connect.microsoft.com/VisualStudio/feedback/details/93940/httplistener-requires-admin-priveleges

Resolution

To grant the Confluence user account permission to bind to the specific IP and Port using the netsh command.  Details are here: http://stackoverflow.com/questions/443640/httplistener-start-accessdenied-error-on-vista

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