Android Question RDC Error: org.apache.http.conn.ConnectTimeoutException: Connect to /x.x.x.x:17178 timed out

[Mahares]

I am trying to display few records from a table with SELECT statement using RDC with a local SQLite database. The PC is connected to a Comcast modem. IPConfig showed IPs of 10.0.0.1 and also 10.0.0.13. I tried both of them. I even looked up on the web what the local PC’s IP is and it showed me something like: 71.60.235.240. I tried all 3 IPs. But, I always get the below timeout message about 30 seconds after I click the activity on the device. After spending two days struggling and reading the tutorials:

Error: org.apache.http.conn.ConnectTimeoutException: Connect to /10.0.0.1:17178 timed out

I have Port 17178 enabled. I even tested by temporarily turning of Firewall completely. The Browser test shows successful every time.

Thank you for any tips.

 

[Erel]

I don't understand. Are the device and the PC connected to the same local network?

Have you tried the "test" url from the device browser?

 

[Mahares]

The tablet and PC are not connected to the same local network. Are they supposed to?
I ran the tablet browser test like this using 3 separate URLs:
http://71.60.xxx.xxx:17178/?method=eedroid_be. I also tried: http://10.0.0.13:17178/?method=eedroid_be But nothing happened. I even replaced eedroid_be with test and still the browser says: did not match any document.
The B4A example I used was the one you posted in RDC_client.zip except that I changed it to my database which is called eedroid_be.db and ran a SELECT statement on a given table. I might be really lost like many others that I noticed when I was studying the RDC tutorial.
Thank you for answering

 

[Erel]

I might be really lost like many others that I noticed when I was studying the RDC tutorial.

This issue is not related to RDC.

Running a server over the internet requires some configuration. See this tutorial: https://www.b4x.com/android/forum/threads/37201/#content

 

[Mahares]

Here is my situation:
I have 3 PCs connected to the same home network. all connected to the internet via one Comcast cable modem. No routers are involved. All three show the same public IP as 71.60.2xx.2xx when I look up the IP from a site like mylocation.org. Each PC shows a different local IPv4 address when I use ipconfig. The private IPs have this format: 10.0.0.x. If I run the Android application from the tablet to connect with the SQLite database in any of the three PCs, I get the same log error:: Error: org.apache.http.conn.ConnectTimeoutException: Connect to /10.0.0.1:17178 timed out
What kind of work do I need to do to get to view data on the tablet from the database located in any of the PCs.
Thank you

 

[Erel]

Is the tablet connected to the same local network?

 

[Mahares]

No. The tablet is not connected to the network as I mentioned earlier in post#3, only to the same WiFi.

 

[Erel]

You need to understand how your network is configured. My guess is that they are connected to the same local network.

What is the tablet ip address (the internal address)?

If you want to connect to a computer over the internet then you need to follow the steps from the link I posted above.

 

[Mahares]

@Erel:
I read the information in the link you provided. But, it talks about configuring router which I do not have.

What is the tablet ip address (the internal address)?

1. The IP when I connect via B4A bridge is: 10.0.0.3. Is this what you call internal address. If not how do you obtain it?
2. What test do you run to see if the tablet is connected to the same network or not?

 

[Erel]

Based on the ip address, it is connected to the same local network.

Open a command console and run ping 10.0.0.3. It will probably be successful.

Are you running RDC or jRDC (from B4J) on the PC?
Have you opened port 17178 in the PC firewall?

 

[Mahares]

Are you running RDC or jRDC (from B4J) on the PC?

I am running RDC, not jRDC. I never messed with jRDC.

Have you opened port 17178 in the PC firewall?

This was done as mentioned in post#1.

 

[Erel]

Did the ping succeed? What happens when you send a test request (screenshot of the mobile browser)?

 

[Mahares]

Here is the ping result:

What happens when you send a test request (screenshot of the mobile browser)?

Not sure what you mean here.

 

[tigrot]

He means...
Open mobile browser windows and try to connect 10.0.0.3:17178/?method=test from the browser(on smartphone, not on desktop).

Ciao
Mauro

 

[Mahares]

Open mobile browser windows and try to connect 10.0.0.3:17178/?method=test from the browser(on smartphone, not on desktop).

The result on the mobile browser is: Webpage not available.
Thanks

 

[Erel]

How can it work? 10.0.0.3 is the device ip address. Not the pc address...

 

[Mahares]

How can it work? 10.0.0.3 is the device ip address. Not the pc address..

Out of respect, I was following tigrot's instruction in post#15.

http://10.0.0.13:17178/?method=test from the device's browser returns 'connection successful
@Erel: I am good now. The data displays on the device when I run the client app to display the table records.
Thank you very much for your consistent help.

 

[tigrot]

I was thinking 10.0.0.3 as the server IP.. Forgive me!

 

[Erel]

What I was trying to say to Mahares, is that the solution will not come from endless trial and error. You need to understand how the network is built and the few minimum concepts (ip address, firewall, internal ip address vs. the external ip address, etc.).

 

[tigrot]

Sure. I spent 30 years in networking, from serial (RS232 RS422 etc.) to Bluetooth and Wi-FI. (zig-bee as well). I go on learning every day also today I'm near to 61. The only thing I don't understand is Apple policy for their APP Store. 15 days ago I published the 4th version of an app and they rejected because I didn't put the disclainer "Continuous use of background location can reduce battery life". Now it's on review again, hope that the new disclaimer likes them! 15 days and I know how much money I loose!