Connection Error Connection Not Found Exception Tcp Open
Speaker BureauLog inRegisterSearchSearchCancelError: You don't have JavaScript enabled. This tool uses JavaScript and much of it will not work correctly without it enabled. Please turn JavaScript back on and reload this page. Please enter a title. You can not post a blank message. Please type your message and try again. More discussions in CLDC and MIDP All PlacesJavaEmbedded TechnologiesCLDC and MIDP This discussion is archived 12 Replies Latest reply on Apr 8, 2009 5:53 AM by darrylburke javax.microedition.io.ConnectionNotFoundException: TCP open 843849 Apr 4, 2009 12:45 PM Hi, Im was trying to connect the web using HttpConnection in MITP2.1. But it throws the exception. The code below throws the exception: String URL = "http://punto-informatico.it/fader/pixml.xml" HttpConnection http = (HttpConnection) Connector.open(URL); InputStream is = http.openInputStream(); The below is the exception throws: javax.microedition.io.ConnectionNotFoundException: TCP open at com.sun.midp.io.j2me.socket.Protocol.connect(Protocol.java:216) at com.sun.midp.io.ConnectionBaseAdapter.openPrim(ConnectionBaseAdapter.java:103) at com.sun.midp.io.j2me.socket.Protocol.openPrim(+108) at com.sun.midp.io.ConnectionBaseAdapter.openPrim(ConnectionBaseAdapter.java:205) at com.sun.midp.io.ConnectionBaseAdapter.openPrim(ConnectionBaseAdapter.java:227) at com.sun.midp.io.j2me.http.Protocol.connect(+73) at com.sun.midp.io.j2me.http.Protocol.streamConnect(Protocol.java:1653) at com.sun.midp.io.j2me.http.Protocol.startRequest(Protocol.java:1634) at com.sun.midp.io.j2me.http.Protocol.sendRequest(Protocol.java:1561) at com.sun.midp.io.j2me.http.Protocol.sendRequest(Protocol.java:1517) at com.sun.midp.io.j2me.http.Protocol.getResponseCode(Protocol.java:1284) But the below code use the localhost it is working. private String URL = "http://localhost/ServerCode/RSS.php"; HttpConnection http = (HttpConnection) Connector.open(URL); InputStream is = http.openInputStream(); Please help me to solve the proplem. Thanks in advance. Saravanan.K 534Views Tags: none (add) This content has been marked as final. Show 12 replies 1. Re: javax.microedition.io.ConnectionNotFoundException: TCP open 843849 Apr 4, 2009 1:05 PM (in response to 843849) Is your firewall blocking the connection? Like Show 0 Likes(0) Actions 2. Re: javax.microedition.io.ConnectionNotFoundException: TCP open 843849 Apr 6, 2009 5:22 AM (in response to 843849) Than
New Topic programming forums Java Java JSRs Mobile Certification Databases Caching Books Engineering Languages Frameworks Products This Site Careers Other all forums Forum: Java Micro Edition MIDP and Connection Not Found Exception: Tommy Tucker Greenhorn Posts: 12 posted 12 years ago Hi I'am doing some J2ME programming using the sun reference implementations for CLDC1.1 and MIDP2.0. I am compiling,preverifying and running from the command line. I'am using the fedora Core 2 OS. The problem I'am https://community.oracle.com/thread/1697685?start=0 having is when i try to open a socket or serversocket connection. I can setup a HTTP Connection and datagram connection no problem but when I try to setup a serversocket Connection i get the following error: javax.microedition.io.ConnectionNotFoundException: The requested protocol does not exist serversocket://:8081 when i try to open a socket connection the exception is https://coderanch.com/t/228201/JME/Mobile/MIDP-Connection-Exception javax.microedition.io.ConnectionNotFoundException: TCP open the code I'am using is: try { System.out.println("About to open serversocket"); StreamConnectionNotifier serverSocket = (StreamConnectionNotifier)Connector.open("serversocket://:8081", Connector.READ_WRITE); serverSocket.close(); System.out.println("ServerSocket clossed"); } catch (IOException io) { System.out.println("problem with serversocket connection"); io.printStackTrace(); } and try { System.out.println("about to open socket"); StreamConnection socket = (StreamConnection)Connector.open("socket://127.0.0.1:8081", Connector.READ_WRITE); socket.close(); System.out.println("socket closed"); } catch (IOException io) { System.out.println("problem with socket connection"); io.printStackTrace(); } Anyone have any idea how to solve this problem? Is it fedora related? I know it is up to each vendor to provide an implementation for the network protocols but in the MIDP2.0 there is class that implement them under the com.sun.midp.io.j2me classes, so dont think its that the protocols are not supported. Any help would be much appreciated. Thanks in advance Tommy Tucker Greenhorn Posts: 12 posted 12 years ago I solved the socket problem. The address and port i was trying to connect to did not not have a server running on it. Also the MIDP2.0 reference implementation does have a package package com.sun.midp.io
Related Tips: More > SQL Server Configurations Problem Sometimes you may have issues connecting to SQL Server and you may get messages such as the following: ERROR: (provider: Named Pipes Provider, error: 40 - Could not open a connection to https://www.mssqltips.com/sqlservertip/2340/resolving-could-not-open-a-connection-to-sql-server-errors/ SQL Server) (Microsoft SQL Server, Error:) An error has occurred while establishing a connection to the server. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 5) Or An https://blogs.msdn.microsoft.com/sql_protocols/2008/04/30/steps-to-troubleshoot-sql-connectivity-issues/ error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes connection error Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 1326) Or A network-related error or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - No such host is known.) (Microsoft SQL Server, Error: 11001) These errors could be connection error connection for either Named Pipes connections or TCP/IP connections. In this tip, we look at what may be causes to these errors and how to resolve. Solution There could be several reasons you get these error messages. Follow the below steps to see if you can resolve the issue. Step 1Make sure you are able to ping the physical server where SQL Server is installed from the client machine. If not, you can try to connect to the SQL Server using an IP Address (for default instance) or IP Address\Instance Name for a named instance. If it resolves using an IP address, you can add the SQL Server machine into /etc/host file. To add the entry in the /host file type %SystemRoot%\system32\drivers\etc\ in the run window and open the host file using Notepad. In the below image I added IP address 74.200.243.253 with a machine name of SQLDBPool. Now I should be able to use the machine name instead of the IP address to connect to the SQL Server. Step 2 Make sure the SQL services are running You can check the SQL Server services by using the SC command or SQL Server Configuration Manager. Many times you may find that the SQL Server instance is not running. Using SQL Server Configuration Manager Using SC command Please note for a named instance you have to write the command as follows using the cor
Server ConnectivityApril 30, 200859 0 0 0 We have been seeing and trying to resolve SQL connectivity issue all the time. I guess it would be helpful if we can put some guidance on how to resolve connectivity issues. Here comes a proposal based on my experience. Basically, when you failed to connect to your SQL Server, the issue could be:
1) Network issue, 2) SQL Server configuration issue. 3) Firewall issue, 4) Client driver issue, 5) Application configuration issue. 6) Authentication and logon issue. Usually, customers see connectivity issue in their applications, but it would be great if you can follow the steps below to eliminate issues one by one and post a question on SQL Server Data Access forum if needed. Step 1: Network issue You might be able to make local connection without a working network, but that's a special case. For remote connection, a stable network is required. The first thing to trouble shoot SQL connectivity issues is to make sure the network we rely on is workable and stable. Please run the following commands: ping -a