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App Inventor 2 拓展参考文档 · App Inventor 2 中文网
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【TCP客户端】 ClientSocketAI2Ext 拓展：TCP/IP传输协议
【UDP】 UrsAI2UDP 拓展 - UDP广播通信协议
【蓝牙】BlueToothLE 拓展：低功耗蓝牙(BLE) Iot 专题
【WIFI】TaifunWiFi 拓展：手机WiFi连接管理
【FTP】App Inventor 2 FTP 上传下载全方案总...
PHP how to get local IP of system
...can be obtained like this:
$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
socket_connect($sock, "8.8.8.8", 53);
socket_getsockname($sock, $name); // $name passed by reference
$localAddr = $name;
How it works:
Since this is UDP, socket_connect doesn't go out on the network. It only assigns...
How to configure logging to syslog in Python?
...oftware handle it. Retrying, queuing, local spooling, using TCP instead of UDP for syslog and so forth become possible. You can also [re-]configure those daemons separately from your code as it should be.
Save your coding for your application, let other software do it's job in concert.
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How do I determine if a port is open on a Windows server? [closed]
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Assuming that it's a TCP (rather than UDP) port that you're trying to use:
On the server itself, use netstat -an to check to see which ports are listening.
From outside, just use telnet host port (or telnet host:port on Unix systems) to see if the connection is...
Enable remote connections for SQL Server Express 2012
...ll re-calculate a new random port for you) AND also open BOTH TCP 1433 and UDP 1434 incoming port rules in the Advanced Firewall control panel. When dynamic ports was blank the SQL Server just hung on start-up.
– Tony Wall
Mar 30 '13 at 0:54
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What is the largest TCP/IP network port number allowable for IPv4?
...rom port 0, there is usually no enforcement of the 0-1023 reservation. TCP/UDP implementations usually don't enforce reservations apart from 0. You can, if you want to, run up a web server's TLS port on port 80, or 25, or 65535 instead of the standard 443. Likewise, even tho it is the standard that ...
Connecting to TCP Socket from browser using javascript
...a.org/en-US/docs/Web/API/TCPSocket
Chrome now has support for raw TCP and UDP sockets in its ‘experimental’ APIs. These features are only available for extensions and, although documented, are hidden for the moment. Having said that, some developers are already creating interesting projects usi...
What is the Difference Between read() and recv() , and Between send() and write()?
...or a socket. Yet a socket is only a real stream if it uses TCP. If it uses UDP it's more like a block device. But if both sides use it like a stream, it will work like a stream and you cannot even send an empty UDP packet using write calls, so this situation won't arise.
– Meck...
How do I connect to this localhost from another computer on the same network?
... 53
#
iptables -A INPUT -p tcp --dport 53 -j ACCEPT
iptables -A INPUT -p udp --dport 53 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 53 -j ACCEPT
iptables -A OUTPUT -p udp --dport 53 -j ACCEPT
iptables -A INPUT -p udp --sport 53 -j ACCEPT
iptables -A INPUT -p tcp --sport 53 -j ACCEPT
iptabl...
“java.lang.OutOfMemoryError : unable to create new native Thread”
...e creating 11K clients that uses 32 K threads for reading, writing data on UDP sockets. Out of these 32 K threads, 10K threads are keep alive threads that are used to keep the socket open
– Deepak Tewani
May 28 '13 at 10:50
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