Added tls for http clients (#5766)

* Added global http client

* Added Do func for global http client

* Changed the code to use the global http client

* Fix http client in volume uploader

* Fixed pkg name

* Fixed http util funcs

* Fixed http client for bench_filer_upload

* Fixed http client for stress_filer_upload

* Fixed http client for filer_server_handlers_proxy

* Fixed http client for command_fs_merge_volumes

* Fixed http client for command_fs_merge_volumes and command_volume_fsck

* Fixed http client for s3api_server

* Added init global client for main funcs

* Rename global_client to client

* Changed:
- fixed NewHttpClient;
- added CheckIsHttpsClientEnabled func
- updated security.toml in scaffold

* Reduce the visibility of some functions in the util/http/client pkg

* Added the loadSecurityConfig function

* Use util.LoadSecurityConfiguration() in NewHttpClient func

unmaintained/stress_filer_upload/bench_filer_upload/bench_filer_upload.go

@@ -13,6 +13,7 @@ import (
 	"strings"
 	"sync"
 	"time"
+	util_http "github.com/seaweedfs/seaweedfs/weed/util/http"
 )
 
 var (
@@ -30,8 +31,8 @@ type stat struct {
 }
 
 func main() {
-
 	flag.Parse()
+	util_http.InitGlobalHttpClient()
 
 	data := make([]byte, *size)
 	println("data len", len(data))
@@ -43,16 +44,12 @@ func main() {
 		go func(x int) {
 			defer wg.Done()
 
-			client := &http.Client{Transport: &http.Transport{
-				MaxIdleConns:        1024,
-				MaxIdleConnsPerHost: 1024,
-			}}
 			r := rand.New(rand.NewSource(time.Now().UnixNano() + int64(x)))
 
 			for t := 0; t < *times; t++ {
 				for f := 0; f < *fileCount; f++ {
 					fn := r.Intn(*fileCount)
-					if size, err := uploadFileToFiler(client, data, fmt.Sprintf("file%04d", fn), *destination); err == nil {
+					if size, err := uploadFileToFiler(data, fmt.Sprintf("file%04d", fn), *destination); err == nil {
 						statsChan <- stat{
 							size: size,
 						}
@@ -93,7 +90,7 @@ func main() {
 
 }
 
-func uploadFileToFiler(client *http.Client, data []byte, filename, destination string) (size int64, err error) {
+func uploadFileToFiler(data []byte, filename, destination string) (size int64, err error) {
 
 	if !strings.HasSuffix(destination, "/") {
 		destination = destination + "/"
@@ -116,10 +113,13 @@ func uploadFileToFiler(client *http.Client, data []byte, filename, destination s
 	uri := destination + filename
 
 	request, err := http.NewRequest(http.MethodPost, uri, body)
+	if err != nil {
+		return 0, fmt.Errorf("http POST %s: %v", uri, err)
+	}
 	request.Header.Set("Content-Type", writer.FormDataContentType())
 	// request.Close = true  // can not use this, which do not reuse http connection, impacting filer->volume also.
 
-	resp, err := client.Do(request)
+	resp, err := util_http.GetGlobalHttpClient().Do(request)
 	if err != nil {
 		return 0, fmt.Errorf("http POST %s: %v", uri, err)
 	} else {

unmaintained/stress_filer_upload/stress_filer_upload_actual/stress_filer_upload.go

@@ -14,6 +14,7 @@ import (
 	"strings"
 	"sync"
 	"time"
+	util_http "github.com/seaweedfs/seaweedfs/weed/util/http"
 )
 
 var (
@@ -30,8 +31,8 @@ type stat struct {
 }
 
 func main() {
-
 	flag.Parse()
+	util_http.InitGlobalHttpClient()
 
 	var fileNames []string
 
@@ -51,8 +52,6 @@ func main() {
 	for x := 0; x < *concurrency; x++ {
 		wg.Add(1)
 
-		client := &http.Client{}
-
 		go func() {
 			defer wg.Done()
 			rand.Shuffle(len(fileNames), func(i, j int) {
@@ -60,7 +59,7 @@ func main() {
 			})
 			for t := 0; t < *times; t++ {
 				for _, filename := range fileNames {
-					if size, err := uploadFileToFiler(client, filename, *destination); err == nil {
+					if size, err := uploadFileToFiler(filename, *destination); err == nil {
 						statsChan <- stat{
 							size: size,
 						}
@@ -99,7 +98,7 @@ func main() {
 
 }
 
-func uploadFileToFiler(client *http.Client, filename, destination string) (size int64, err error) {
+func uploadFileToFiler(filename, destination string) (size int64, err error) {
 	file, err := os.Open(filename)
 	if err != nil {
 		panic(err)
@@ -131,9 +130,13 @@ func uploadFileToFiler(client *http.Client, filename, destination string) (size
 	uri := destination + file.Name()
 
 	request, err := http.NewRequest(http.MethodPost, uri, body)
+	if err != nil {
+		return 0, fmt.Errorf("http POST %s: %v", uri, err)
+	}
+
 	request.Header.Set("Content-Type", writer.FormDataContentType())
 
-	resp, err := client.Do(request)
+	resp, err := util_http.GetGlobalHttpClient().Do(request)
 	if err != nil {
 		return 0, fmt.Errorf("http POST %s: %v", uri, err)
 	} else {