client.go Make addMissingPort() public

It's needed for those who creates the instance of the HostClient manually.

client.go

@@ -494,7 +494,7 @@ func (c *Client) Do(req *Request, resp *Response) error {
 	hc := m[string(host)]
 	if hc == nil {
 		hc = &HostClient{
-			Addr:                          addMissingPort(string(host), isTLS),
+			Addr:                          AddMissingPort(string(host), isTLS),
 			Name:                          c.Name,
 			NoDefaultUserAgentHeader:      c.NoDefaultUserAgentHeader,
 			Dial:                          c.Dial,
@@ -1967,7 +1967,7 @@ func dialAddr(addr string, dial DialFunc, dialDualStack, isTLS bool, tlsConfig *
 		} else {
 			dial = Dial
 		}
-		addr = addMissingPort(addr, isTLS)
+		addr = AddMissingPort(addr, isTLS)
 	}
 	conn, err := dial(addr)
 	if err != nil {
@@ -2008,7 +2008,7 @@ func (c *HostClient) getClientName() []byte {
 // AddMissingPort adds a port to a host if it is missing.
 // A literal IPv6 address in hostport must be enclosed in square
 // brackets, as in "[::1]:80", "[::1%lo0]:80".
-func addMissingPort(addr string, isTLS bool) string {
+func AddMissingPort(addr string, isTLS bool) string {
 	columnPos := strings.IndexByte(addr, ':')
 	if columnPos >= 0 {
 		endOfV6 := strings.IndexByte(addr[columnPos:], ']')

client_test.go

@@ -2972,7 +2972,7 @@ func TestHttpsRequestWithoutParsedURL(t *testing.T) {
 	}
 }
 
-func Test_addMissingPort(t *testing.T) {
+func Test_AddMissingPort(t *testing.T) {
 	type args struct {
 		addr  string
 		isTLS bool
@@ -3021,8 +3021,8 @@ func Test_addMissingPort(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.want, func(t *testing.T) {
-			if got := addMissingPort(tt.args.addr, tt.args.isTLS); got != tt.want {
-				t.Errorf("addMissingPort() = %v, want %v", got, tt.want)
+			if got := AddMissingPort(tt.args.addr, tt.args.isTLS); got != tt.want {
+				t.Errorf("AddMissingPort() = %v, want %v", got, tt.want)
 			}
 		})
 	}