SA1019: httputil.ClientConn has been deprecated since Go 1.0: Use Client or Transport in package net/http instead.

[EtienneM]

apps/run.go:350:12: SA1019: httputil.ClientConn has been deprecated since Go 1.0: Use Client or Transport in package net/http instead. (staticcheck)                                          
        var conn *httputil.ClientConn                                                                                                                                                         
                  ^                                                                            
apps/run.go:356:10: SA1019: httputil.NewClientConn has been deprecated since Go 1.0: Use the Client or Transport in package net/http instead. (staticcheck)                                   
                conn = httputil.NewClientConn(tlsConn, nil)                                                                                                                                   
                       ^                                                                                                                                                                      
apps/run.go:358:10: SA1019: httputil.NewClientConn has been deprecated since Go 1.0: Use the Client or Transport in package net/http instead. (staticcheck)                                   
                conn = httputil.NewClientConn(dial, nil)                                                                                                                                      

[EtienneM]

I tried to find a solution but didn't succeed. There is no more HTTP client hijack in Go (golang/go#28030). Hence we need to figure out another way to make the underlying TCP connection bidirectional.