I'm trying to monitor network activity on my iPhone from within an app I'm developing. Does iOS support a netstat-like command or something similar that can tell me what what inbound and outbound connections are active ?
After some searching I found Apple's code used for netstat.
Everything you need in the void protopr(uint32_t proto, char *name, int af) function.
I tested on the device and sysctlbyname("net.inet.tcp.pcblist_n",...) works.
That should be all you need.
I can't test this but from what I gather you will have to use sysctl in combination with sysctlnametomib or alternatively sysctlbyname for this:
sysctlbyname("net.inet.tcp.pcblist", ...)
and/or
sysctlbyname("net.inet.udp.pcblist", ...)
You can use burp suite for this purpose , By this you can inspect all the http data going through your phone. You have to install this in your mac/ubuntu/windows machine, and then create a proxy server with help of this tool and then modify your wifi setting in iphone/android phone to use your pc as proxy , and then it will capture all the input/output traffic.
Read full instruction here - http://www.engadget.com/2011/02/21/how-to-inspect-ioss-http-traffic-without-spending-a-dime/
来源：https://stackoverflow.com/questions/6134661/how-to-monitor-network-activity-from-within-app