Add exported go function "cycletls.NewTransport()" to return a custom…

… http.Client transport, for use with a custom http.client. (#286)

README.md

@@ -133,6 +133,27 @@ func main() {
 
 ```
 
+## Example using your own custom http.Client
+
+```go
+import (
+	"github.com/Danny-Dasilva/CycleTLS/cycletls"
+	http "github.com/Danny-Dasilva/fhttp" // note this is a drop-in replacement for net/http
+)
+
+func main() {
+	ja3 := "771,52393-52392-52244-52243-49195-49199-49196-49200-49171-49172-156-157-47-53-10,65281-0-23-35-13-5-18-16-30032-11-10,29-23-24,0"
+	ua := "Chrome Version 57.0.2987.110 (64-bit) Linux"
+
+ 	 cycleClient := &http.Client{
+ 		Transport:     cycletls.NewTransport(ja3, ua),
+ 	 }
+
+	resp, err := cycleClient.Get("https://tls.peet.ws/")
+	...
+}
+```
+
 ## Creating an instance
 
 In order to create a `cycleTLS` instance, you can run the following:

cycletls/client.go

@@ -36,6 +36,40 @@ func clientBuilder(browser browser, dialer proxy.ContextDialer, timeout int, dis
 	return client
 }
 
+// NewTransport creates a new HTTP client transport that modifies HTTPS requests
+// to imitiate a specific JA3 hash and User-Agent.
+// # Example Usage
+// import (
+//
+//	"github.com/Danny-Dasilva/CycleTLS/cycletls"
+//	http "github.com/Danny-Dasilva/fhttp" // note this is a drop-in replacement for net/http
+//
+// )
+//
+// ja3 := "771,52393-52392-52244-52243-49195-49199-49196-49200-49171-49172-156-157-47-53-10,65281-0-23-35-13-5-18-16-30032-11-10,29-23-24,0"
+// ua := "Chrome Version 57.0.2987.110 (64-bit) Linux"
+//
+//	cycleClient := &http.Client{
+//		Transport:     cycletls.NewTransport(ja3, ua),
+//	}
+//
+// cycleClient.Get("https://tls.peet.ws/")
+func NewTransport(ja3 string, useragent string) http.RoundTripper {
+	return newRoundTripper(browser{
+		JA3:       ja3,
+		UserAgent: useragent,
+	})
+}
+
+// NewTransport creates a new HTTP client transport that modifies HTTPS requests
+// to imitiate a specific JA3 hash and User-Agent, optionally specifying a proxy via proxy.ContextDialer.
+func NewTransportWithProxy(ja3 string, useragent string, proxy proxy.ContextDialer) http.RoundTripper {
+	return newRoundTripper(browser{
+		JA3:       ja3,
+		UserAgent: useragent,
+	}, proxy)
+}
+
 // newClient creates a new http client
 func newClient(browser browser, timeout int, disableRedirect bool, UserAgent string, proxyURL ...string) (http.Client, error) {
 	var dialer proxy.ContextDialer