Escaping special characters is http request

[Anders Nygren]

Hi
For an application I am working on I have to download some data using http.
I dont have a lot of http programming experience so please excuse me if I
got the terminology wrong.

I am looking for a library function to escape special characters in strings to 
put in cgi queries.

Like this, http:/server/path?par1=string1&par2=string2

/Anders Nygren