Problem connecting with sockets to MySQL
Hi all! I have asked this before, but no replys. I'll rewrite the question because I don't know if I got understood. ;-) Anyway, I have not found a MySQL list best suited for this question, so here I go... ¿Anyone knows why the server (mysqld) behaves differently to clients connecting from the same remote machine? (Server 3.23.41 on a RedHat 7.2. The client is Windows XP Professional.) In other words, say we are connecting from Host B to Server A. Well, I will list the possible responses I'm getting (remember, always speaking of low level socket connections). - telnet servera 3306-- Response OK. (First handshake packet received OK). - MySQLFront -- Response OK. (MySQLFront connects OK). - mysql -u user -h servera -- Response OK. (MySQL client connects OK). - nc servera 3306-- Response OK. (First handshake packet received OK). OK, at this point, you do think all is ok, don't you? not quite... - Connecting via a simple TCP socket coded in Borland C++ Builder 5.0: The first packet response is: 1130: Host 'hostb' isn't allowed to connect to this mysql server. I am not even allowed to reply with the packet that identifies my to the server. Pardon? What?? I'm not ALLOWED to connect to the server? As you can see, this is nonsense because I CAN connect to the server as seen above. I have not come to a conclusion on this topic, so all you can help is greatly appreciated. I go so far as to capture the packets with a packet sniffer (ethereal), and I got crazy: Everything seems fine, all connections generate the same packets, in the same order... But when connecting from my program, I get that 1130 error. Cheers, Jose Miguel. PS: Yes, I have done a mysqladmin flush-hosts everytime. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Problem connecting with sockets to MySQL
Hi Jose, I believe you miss an important point. Error 1130 means that the host (ip address) is not allowed to connect, it doesnt mean that its not physically possible. You have to check the privileges you gave the user or host that doesnt work. login to mysql from a working account. do this: USE mysql SHOW GRANTS FOR xxxuserxxx; loook exactly what it says. If you are used to mysqlcc than connect from there look at the data in all tables of the mysql database. They contain the privilege of each user or host. there should be 5 tables f.e. mysql.user mysql.host mysql.columns_priv mysql.tables_priv mysql.db You will see that the rights for the host will not be set correctly, most likely in the mysql.host or mysql.user table. Take a GOOD read in the manual, have a rest and then troubleshoot it. Good Luck !! Best regards Nils Valentin Tokyo/Japan 2003 5 29 18:47Jose Miguel Prez : Hi all! I have asked this before, but no replys. I'll rewrite the question because I don't know if I got understood. ;-) Anyway, I have not found a MySQL list best suited for this question, so here I go... Anyone knows why the server (mysqld) behaves differently to clients connecting from the same remote machine? (Server 3.23.41 on a RedHat 7.2. The client is Windows XP Professional.) In other words, say we are connecting from Host B to Server A. Well, I will list the possible responses I'm getting (remember, always speaking of low level socket connections). - telnet servera 3306-- Response OK. (First handshake packet received OK). - MySQLFront -- Response OK. (MySQLFront connects OK). - mysql -u user -h servera -- Response OK. (MySQL client connects OK). - nc servera 3306-- Response OK. (First handshake packet received OK). OK, at this point, you do think all is ok, don't you? not quite... - Connecting via a simple TCP socket coded in Borland C++ Builder 5.0: The first packet response is: 1130: Host 'hostb' isn't allowed to connect to this mysql server. I am not even allowed to reply with the packet that identifies my to the server. Pardon? What?? I'm not ALLOWED to connect to the server? As you can see, this is nonsense because I CAN connect to the server as seen above. I have not come to a conclusion on this topic, so all you can help is greatly appreciated. I go so far as to capture the packets with a packet sniffer (ethereal), and I got crazy: Everything seems fine, all connections generate the same packets, in the same order... But when connecting from my program, I get that 1130 error. Cheers, Jose Miguel. PS: Yes, I have done a mysqladmin flush-hosts everytime. -- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp/staff/nils 182-0024 4-6-1 7F Phone: 0424-40-7912 Fax: 0424-40-7913 URL: http://www.knowd.co.jp -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Problem connecting with sockets to MySQL
Hi Nils! First of all, thanks for your reply. I believe you miss an important point. Error 1130 means that the host (ip address) is not allowed to connect, it doesnt mean that its not physically possible. You have to check the privileges you gave the user or host that doesnt work. Yes, the privileges is all set. Read my post again and you can see I'm explaining that connecting with the mysql client all goes OK and trying to connect with a socket I receive the error. It all goes like this: A) Connecting with mysql -h myhost -u user. Using the command line client all goes ok, I can connect. This is indication for all the privileges are correctly set. B) Connecting with a socket in my C++ program I receive the 1130 error. (This obviously using the SAME machine, not speaking the same IP). What troubles me is what the heck does the libmysql.dll to connect correctly that I can't replicate using a socket. I suppose (and only suppose) I can migrate the server from 3.23.41 to 4.0.13 and all this goes away. If that is the case, I imagine I have catched a bug to the 3.23.41 version. However, I have read all the changelogs up to 4.0 and it doesn't say anything the developers have changed something to the low level connection layer or something. Cheers, Jose Miguel. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
