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App Inventor 2 中文网原创内容 · App Inventor 2 中文网
...示SQLite数据教程
通信与物联网
【UDP通信】App Inventor 2 UDP网络通信教程
【蓝牙遥控】App Inventor 2 蓝牙遥控车完整教程
【JDY-34】App Inventor 2 JDY-34双模蓝牙模块配置教程
【串口通信】App Inventor 2 串口通信...
Message Queue vs Message Bus — what are the differences?
...ularly true for the case where you have a MQ broadcasting messages through UDP, in other words, it is sending messages to a broadcast/multicast address without knowing or caring who is going to be getting them. For a more in-depth description of this scenario you can check this article.
...
What is the fundamental difference between WebSockets and pure TCP?
... So basically WebSocket is simply a wrapper for TCP in the sense that UDP is simply a wrapper for IP?
– Pacerier
Feb 26 '13 at 18:06
3
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How to open a specific port such as 9090 in Google Compute Engine
...er all or a comma delimited list of ports, such as 20-22, 80, 8080.
Select udp to include the UDP protocol and ports. Enter all or a comma delimited list of ports, such as 67-69, 123.
Select Other protocols to include protocols such as icmp or sctp.
(Optional) You can create the firewall rule but ...
How is TeamViewer so fast?
...tes NAT and networks complicated by NAT using NAT traversal (I think it is UDP hole-punching, like Google's libjingle).
They do use their own servers to middle-man in order to do the handshake and connection set-up, but most of the time the relationship between client and server will be P2P (best ...
Is there a way for multiple processes to share a listening socket?
...e original question, but in Linux kernel 3.9 there is a patch adding a TCP/UDP feature: TCP and UDP support for the SO_REUSEPORT socket option; The new socket option allows multiple sockets on the same host to bind to the same port, and is intended to improve the performance of multithreaded network...
Get the IP address of the machine
...be used for a connection to a specific external host. By using a connected UDP socket, you can get the information without actually sending any packets. The approach requires that you choose a specific external host. Most of the time, any well-known public IP should do the trick. I like Google's pub...
Getting the IP address of the current machine using Java
... IP. The destination 8.8.8.8 is not needed to be reachable.
Connect on a UDP socket has the following effect: it sets the destination for Send/Recv, discards all packets from other addresses, and - which is what we use - transfers the socket into "connected" state, settings its appropriate fields....
Can (domain name) subdomains have an underscore “_” in it?
...rscores are very common in the wild. Check _jabber._tcp.gmail.com or _sip._udp.apnic.net.
Other RFC mentioned here deal with different things. The original
question was for domain names. If the question is for host
names (or for URLs, which include a host name), then this is
different, the relevant...
Convert line-endings for whole directory tree (Git)
...r
sfk tcpdump - print TCP conversation between programs
sfk udpdump - print incoming UDP requests
sfk udpsend - send UDP requests
sfk ip - tell own machine's IP address(es).
type "sfk ip -help" for help.
sfk netlog - send text...