B4J Question Connection to http://192.168.0.100:51042 refused

[JOTHA]

Hello Forum,
this belongs to this Tutorial:
[url]http://www.b4x.com/android/forum/threads/server-data-collection-solution-device-desktop-and-web-reports.37254/#post-221756
I did everything described above and also told the firewall to open the port 51042, but it doesn't work.[/URL]
... and here is the error message:

Program started.
org.apache.http.conn.HttpHostConnectException: Connection to http://192.168.0.100:51042 refused
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:159)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:108)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:415)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:641)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:576)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:554)
at anywheresoftware.b4a.http.HttpClientWrapper.executeWithTimeout(HttpClientWrapper.java:310)
at anywheresoftware.b4a.http.HttpClientWrapper.access$0(HttpClientWrapper.java:308)
at anywheresoftware.b4a.http.HttpClientWrapper$ExecuteHelper.run(HttpClientWrapper.java:207)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
Error: org.apache.http.conn.HttpHostConnectException: Connection to http://192.168.0.100:51042 refused
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:123)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:133)
... 15 more

Connection to http://192.168.0.100:51042 refused
I'm confused.
Can anyone tell me what the error could be?

Thank you in advance!

 

[Erel]

Are you sure that this is the server ip address?

What happens when you open 127.0.0.1:51042 in the PC browser?

 

[JOTHA]

I changed in the DataCollectionDesktop

Sub Process_Globals
...
Private link As String = "http://192.168.0.100:51042"

into

Private link As String = "http://127.0.0.1:51042"

Now this part is working!
Thank you Erel.

 

[JOTHA]

... but the DataCollectionDevice ... I have also changed:

Sub Globals
...
Private link As String = "http://127.0.0.1:51042"

This doesn't work.
ErrorMessage: "refused"

Here is the LOG:

** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
** Service (httputils2service) Create **
** Service (httputils2service) Start **
Error: org.apache.http.conn.HttpHostConnectException: Connection to http://127.0.0.1:51042 refused
Error: org.apache.http.conn.HttpHostConnectException: Connection to http://127.0.0.1:51042 refused
** Activity (main) Pause, UserClosed = true **

 

[derez]

127... is the address of own computer so you must find the server ip

 

[JOTHA]

@derez: The Server (DataCollectionServer) is running on the PC and the Device (DataCollectionDevice) is also running on the PC as an emulator.
Do you think I should install the B4A (DataCollectionDevice) on a real Device?

 

[JOTHA]

The Device has this IP: 192.168.178.66
... but this doesn't work ...

 

[derez]

You should find the address of the PC and give it to the device to use in its connection to the server.

look at the " local area connection" in "network and sharing center" (this is in win7, similar in other winows systems).

 

[JOTHA]

Hello David,

thank you very much for your help!
The IP is 192.168.178.53 and so it works with ...

Private link As String = "http://192.168.178.53:51042"

Your help was very usefull!

 

[MODERN TALKING]

Hi guys,

Been away for many months

Glad to be back

Please can help me with this problem too?

B4J with "http://127.0.0.1:51042" works

But B4A with my IPv4 gets this Error Message:

"org.apache.http.conn.ConnectTimeoutException"

I opened Firewall Port TCP 51042 on my Desktop running B4J too

Any assistance is MUCH APPRECIATED

 

[EnriqueGonzalez]

What ip are you calling from B4A? if it is 127.0.0.1 then is wrong that instruction is similar to localhost

 

[MODERN TALKING]

Gracias Enrique,

Not calling 127.0.0.1

Using my IPv4 which is 192.168.x.x

Was using a VPN, but disconnected it too - not working either

Opened a Firewall TCP Port 51042 too

 

[EnriqueGonzalez]

what happens if you ping the server?

private Sub Connected As Boolean
    'Requires Phone Library
    Dim p As Phone
    Dim Response, Error As StringBuilder
    Response.Initialize
    Error.Initialize
    p.Shell("ping -c 1 192.168.1.10",Null,Response,Error)

    If Error.ToString="" Then
        Return True
    Else
        Return False
    End If
End Sub

are you receiving connection refused on b4a?

 

[MODERN TALKING]

I try this

Hold on

 

[MODERN TALKING]

Enrique,

No "CONNECTION REFUSED"

Same message "CONNECTION TIMEOUT"

 

[EnriqueGonzalez]

Then we know is not the port. Turn firewall off completely and antivirus, also worth checking that you are on same network.

 

[MODERN TALKING]

So turn off Firewall and Avast - and use same Public IPv4?

 

[EnriqueGonzalez]

Yes to firewall and avast.

No to public ipv4 if you are on LAN the http://192.168.x.x:51042 should be more than enough.

Are you receiving logs when starting the server?

 

[MODERN TALKING]

Sorry Enrique, but does not work

I wonder the problem

I have to run. Back online tomorrow

MUCHAS GRACIAS Señor

 

[Erel]

You should never post in old threads.