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How to create a loop in bash that is waiting for a webserver to respond?
...ou have no access or async api with your client, you can try grepping your tcp sockets like this:
until grep '***IPV4 ADDRESS OF SERVER IN REVERSE HEX***' /proc/net/tcp
do
printf '.'
sleep 1
done
But that's a busy wait with 1 sec intervals. You probably want more resolution than that. Also ...
How to prevent errno 32 broken pipe?
...
It depends on how you tested it, and possibly on differences in the TCP stack implementation of the personal computer and the server.
For example, if your sendall always completes immediately (or very quickly) on the personal computer, the connection may simply never have broken during sendi...
Sending websocket ping/pong frame from browser
...
TCP does not notify of disconnects when RST/FIN packets were not received. TCP only detects dropped connections when a sender attempts to send on a disconnected connection. Pings are used as heartbeats in many applications an...
高并发服务端分布式系统设计概要 - C/C++ - 清泛网 - 专注C/C++及内核技术
...作：（1）管理系统全局配置，发送全局控制信息；（2）监控各个group的工作状态，提供心跳服务，若发现宕机，通知该group发起分布式选举产生新的Group Master；（3）处理Client端首次到达的请求，找出负责处理该请求的group并将此...
Where is Erlang used and why? [closed]
...er. It has to route many messages simultaneously, and handle many a lot of TCP/IP connections.
So we have 2 features:
handle many connections
route messages given some aspects of the message
These are examples where erlang shines.
handle many connections
It is very easy to build scalable non-...
2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...组由10多人构成，一部分是对商业产品，核心增长指标做监控，挖掘和改进。一部分是搭建数据仓库完善跟各个部门的无缝数据流动，也用到很多技术例如使用 Scalding编写Hadoop MapReduce程序，也有人做AB testing框架， 推荐系统，尽...
Minimal web server using netcat
...can respond to the request.
A web session should go something like this.
TCP session is established.
Browser Request Header: GET / HTTP/1.1
Browser Request Header: Host: www.google.com
Browser Request Header: \n #Note: Browser is telling Webserver that the request header is complete.
Server Respon...
How to start nginx via different port(other than 80)
...to iptables
vi /etc/sysconfig/iptables
-A INPUT -m state --state NEW -m tcp -p tcp --dport 81 -j ACCEPT
Restart IPtables
service iptables restart;
Restart the nginx server
service nginx restart
Access yr nginx server files on port 81
...
ActiveMQ or RabbitMQ or ZeroMQ or [closed]
...
ZMQ
The socket library that acts as a concurrency framework
Faster than TCP, for clustered products and supercomputing
Carries messages across inproc, IPC, TCP, and multicast
Connect N-to-N via fanout, pubsub, pipeline, request-reply
Asynch I/O for scalable multicore message-passing apps
EagleM...
Vagrant reverse port forwarding?
...ning netstat -lt on vagrant VM and taking a note on the following lines:
tcp 0 0 localhost:52698 *:* LISTEN
tcp6 0 0 ip6-localhost:52698 [::]:* LISTEN
share
...