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How to get the client IP address in PHP [duplicate]

... Note: REMOTE_ADDR might not contain the real IP of the TCP connection. This entirely depends on your SAPI. Ensure that your SAPI is properly configured such that $_SERVER['REMOTE_ADDR'] actually returns the IP of the TCP connection. Failing that might give rise to some serious vu...
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Solving a “communications link failure” with JDBC and MySQL [duplicate]

...ptables temporarily on linux. If iptables are misconfigured they may allow tcp packets to be sent to mysql port, but block tcp packets from coming back on the same connection. # Redhat enterprise and CentOS systemctl stop iptables.service # Other linux distros service iptables stop Stop anti-viru...
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How to allow remote connection to mysql

...able rule to allow connections on the port: iptables -A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT Would not recommend this for production environment, but if your iptables are not configured properly, adding the rules might not still solve the issue. In that case following should be don...
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Java JDBC - How to connect to Oracle using Service Name instead of SID

... below: jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL=TCP)(HOST=blah.example.com)(PORT=1521)))(CONNECT_DATA=(SID=BLAHSID)(GLOBAL_NAME=BLAHSID.WORLD)(SERVER=DEDICATED))) share | ...
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Lost connection to MySQL server at 'reading initial communication packet', system error: 0

...o I need to allow port 3306 in iptables: >iptables -A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT share | improve this answer | follow | ...
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Possible reasons for timeout when trying to access EC2 instance

...in the port range, your local IP/32 in the source field, and leave 'custom tcp rule' in the dropdown. share | improve this answer | follow | ...
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How to write a scalable Tcp/Ip based server

...the design phase of writing a new Windows Service application that accepts TCP/IP connections for long running connections (i.e. this is not like HTTP where there are many short connections, but rather a client connects and stays connected for hours or days or even weeks). ...
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What is the difference between active and passive FTP?

...ent and server, the command and data channels, which are actually separate TCP connections. The command channel is for commands and responses while the data channel is for actually transferring files. This separation of command information and data into separate channels a nifty way of being able ...
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普通码农和CTO之间的差距,就是这7点了 - 杂谈 - 清泛网 - 专注C/C++及内核技术

...先要自己把它的每个知识点搞清楚。比如我们可能对HTTP协议并不陌生,但是真的要讲给别人听怎么讲?HTTP协议TCP协议什么关系?HTTP协议有那些支持的方法?什么是无状态?为什么设计成无状态?Session和Cookie是什么关系、什...
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How to resolve “Waiting for Debugger” message?

... 16 and platform-tools' 10. Update. I found that it is the problem of my TCP/IP configuration. The debugger can't be connected when i assign a static IP address(for access to internet). So every time when the debugger is unable to connect, I always do the following steps: 1.close current eclips...