h2c
                                headers 2 curl. Provided a set of HTTP request headers, output the curl command line for generating that set. Try the converter online at
                            
                        How to download and setup h2c
Open terminal and run command
                                            git clone https://github.com/curl/h2c.git
                                        
                                        git clone is used to create a copy or clone of h2c repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with h2c https://github.com/curl/h2c/archive/master.zip
Or simply clone h2c with SSH
                                            [email protected]:curl/h2c.git                                    
                                    If you have some problems with h2c
You may open issue on h2c support forum (system) here: https://github.com/curl/h2c/issuesSimilar to h2c repositories
Here you may see h2c alternatives and analogs
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