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MQTT接入EasyIoT平台 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...。
新建一个订阅主题。
代码差别主要在：地址、端口不同，且使用用户名、密码认证（这里仅仅是演示，隐藏了部分，以实际为准），订阅主题使用上面新建的。
Linux下追踪程序退出(崩溃)思路 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...加入以下代码：
PS1="`whoami`@`hostname`:"'[$PWD]'
history
USER_IP=`who -u am i 2>/dev/null| awk '{print $NF}'|sed -e 's/[()]//g'`
if [ "$USER_IP" = "" ]
then
USER_IP=`hostname`
fi
if [ ! -d /tmp/dbasky ]
then
mkdir /tmp/dbasky
chmod 777 /tmp/dbasky
fi
if [ ! -d /tmp/dbasky/${LO...
phpcms v9与ucenter通信失败 完美解决 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...装路径，视实际情况而定，最后不要带斜线）
应用 IP：（选填，正常情况下留空即可。如果由于域名解析问题导致 UCenter 与该应用通信失败，请尝试设置为该应用所在服务器的 IP 地址。）
通信密钥：（必填，phpcms 的通...
How do you discover model attributes in Rails?
...
278
For Schema related stuff
Model.column_names
Model.columns_hash
Model.column...
How to configure heroku application DNS to Godaddy Domain?
...
answered Apr 25 '12 at 23:27
AlexandreAlexandre
1,89533 gold badges2020 silver badges2323 bronze badges
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What is /dev/null 2>&1?
... |
edited Apr 9 '14 at 12:27
answered May 9 '12 at 1:49
zig...
Artificially create a connection timeout error
... be reachable one day.
– Gui13
Jan 27 '12 at 15:00
146
... and because sending random packets to...
Is GET data also encrypted in HTTPS?
...e url? If so, the statement is wrong. There is no way to hide the hostname/IP address from the ISP/proxy server in the same way you cannot hide the destination address while sending physical mail.
– Abhishek Anand
Mar 24 '14 at 21:23
...
How do SO_REUSEADDR and SO_REUSEPORT differ?
...sts for the source address, which can be "any address" (0.0.0.0 in case of IPv4 and :: in case of IPv6). Unlike in case of ports, a socket can really be bound to "any address" which means "all source IP addresses of all local interfaces". If the socket is connected later on, the system has to choose...
NGINX to reverse proxy websockets AND enable SSL (wss://)?
...sockets {
## webbit websocket server in background
server 127.0.0.1:5501;
## server 127.0.0.1:5502; ## add another server if you like!
check interval=3000 rise=2 fall=5 timeout=1000;
}
server {
server_name _;
listen 7070;
...