refactor(http): implement shared transport and clients (#1288)

* fix(http): flip to a shared transport and clients

* nice threads

* that is terrible

* fake uri for magnet

* lazy locking

* why bother with r's

* flip magic params to struct

* refactor(http-clients): use separate clients with shared transport

* refactor(http-clients): add missing license header

* refactor(http-clients): defer and fix errors

---------

Co-authored-by: ze0s <ze0s@riseup.net>

pkg/porla/client.go

@@ -4,7 +4,6 @@
 package porla
 
 import (
-	"crypto/tls"
 	"io"
 	"log"
 	"net/http"
@@ -12,6 +11,7 @@ import (
 	"time"
 
 	"github.com/autobrr/autobrr/pkg/jsonrpc"
+	"github.com/autobrr/autobrr/pkg/sharedhttp"
 )
 
 var (
@@ -62,20 +62,17 @@ func NewClient(cfg Config) *Client {
 		c.timeout = time.Duration(cfg.Timeout) * time.Second
 	}
 
-	c.http = &http.Client{
-		Timeout: c.timeout,
-	}
-
-	customTransport := http.DefaultTransport.(*http.Transport).Clone()
-	if cfg.TLSSkipVerify {
-		customTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
-	}
-
 	httpClient := &http.Client{
 		Timeout:   c.timeout,
-		Transport: customTransport,
+		Transport: sharedhttp.Transport,
 	}
 
+	if cfg.TLSSkipVerify {
+		httpClient.Transport = sharedhttp.TransportTLSInsecure
+	}
+
+	c.http = httpClient
+
 	token := cfg.AuthToken
 
 	if !strings.HasPrefix(token, "Bearer ") {