https://github.com/hectorta1989/gg-connectivity-libcurl-cpp
C++ library based on libcurl. It includes HTTP get request function and read the responses back from Google website
https://github.com/hectorta1989/gg-connectivity-libcurl-cpp
Last synced: about 2 months ago
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C++ library based on libcurl. It includes HTTP get request function and read the responses back from Google website
- Host: GitHub
- URL: https://github.com/hectorta1989/gg-connectivity-libcurl-cpp
- Owner: HectorTa1989
- License: gpl-3.0
- Created: 2022-01-04T16:33:12.000Z (almost 4 years ago)
- Default Branch: master
- Last Pushed: 2022-01-06T14:31:20.000Z (over 3 years ago)
- Last Synced: 2025-01-07T06:47:55.810Z (9 months ago)
- Language: C++
- Size: 146 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Google connectivity test using Libcurl written in C++
In this repository, I created a C++ library based on libcurl. It includes HTTP get request function and read the responses back from Google website. Then, extract statistics from the responses.
## Program operation and Libcurl API explanation
The requirement is that we must send HTTP get request to Google and read the responses. So, I use the following functions for those tasks:
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback );
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, LibcurlHeaders);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &chunk);
Where,
CURLOPT_WRITEFUNCTION - callback for writing received data
CURLOPT_WRITEDATA - pointer passed to the write callback.
**Note**: If you are using libcurl as a win32 DLL, you MUST use a CURLOPT_WRITEFUNCTION if you set this option. Otherwise, you will experience crashes.
## Environment settings
I built the program in MacOS. So I installed curl, libcurl using brew install in cmd. After finished installation, we have the path: **/user/local/Cellar**
Our cpp program and Make file can be stored there.
In case we want to test connectivity of various websites, we should write main function like this:
## Main function description
int main(int argc, char *argv[])
{
if( argc != 2 )
{
printf("usage: try './curl [url]' to make a get request.\n");
return 1;
}
CURL *curl_handle;
CURLcode res;
curl_handle = curl_easy_init();
if(curl_handle)
{
curl_easy_setopt(curl_handle, CURLOPT_URL, argv[1]); // argv[1] is the website we want to test
...
}
}
But according to the test requirement is Google website, I just put it directly in curl_easy_setopt(curl_handle, CURLOPT_URL, "https://www.google.com");
## Build program instruction
On MacOS cmd:
cd /
cd usr/local/Cellar/
make
Then it will generate output file. We execute it by running:
./output
## Program output
SKTEST;;;;;;;<49950 bytes retrieved>
Output screen capture
I added output file to let others run it directly.
## Ongoing work
I'm going to develop the code for 2 modes: One is to use Libcurl, another implements only based on TCP Linux socket.