how can I see POST methods in raw HTTP that my computer sends to a page?

Answer 1

You need a proxy such as Fiddler. Fiddler is a freeware HTTP Debugging Proxy which allows you to inspect all HTTP Traffic, set breakpoints, and "fiddle" with incoming or outgoing data.

Answer 2

Checkout HttpFox

Answer 3

Firebug is also a great addition to Firefox that will let you see HTTP traffic as well as lots of other aspects of your pages.

Answer 4

Live HTTP Headers is a nice Firefox plug-in.

Answer 5

Might be a little bit of overkill in this instance, but you might want to check out Wireshark.

Answer 6

Also there is Tamper Data plugin for Firefox

Answer 7

TCPMon is a Java based TCP proxy, not as full featured as Fiddler appears to be, but runs on anything with a JVM.

Answer 8

i can't beleive nobody mentioned tcpdump or wireshark (the tool previously known as Ethereal). There was also a time when several articles said that every network administrator should have a Mac only to run Etherpeek (now known as OmniPeek, and runs on windows instead of mac)