The first thing that you have to do is download the curl sources
git clone https://github.com/curl/curl.git
Move into the directory & do a cmake & make
cd curl
mkdir build
cmake .. -DCMAKE_BUILD_TYPE=Debug
make -j 4
Start ddd (Data Display Debugger)
ddd src/curl
In the ddd/gdb console type:
list curl/lib/http.c:1478
break Curl_http_connect
run http://ip.jsontest.com
