fix panic: ref #5217 (#5230)

pkg/protocols/http/httpclientpool/options.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/projectdiscovery/rawhttp"
+	urlutil "github.com/projectdiscovery/utils/url"
 )
 
 // WithCustomTimeout is a configuration for custom timeout
@@ -39,7 +40,27 @@ func SendRawRequest(client *rawhttp.Client, opts *RawHttpRequestOpts) (*http.Res
 			// this error is caused when rawhttp client sends a corrupted or malformed request packet to server
 			// some servers may attempt gracefully shutdown but most will just abruptly close the connection which results
 			// in a connection reset by peer error and this can be safely assumed as 400 Bad Request in terms of normal http flow
-			req, _ := http.NewRequest(opts.Method, opts.URL, opts.Body)
+			req, reqErr := http.NewRequest(opts.Method, opts.URL, opts.Body)
+			if reqErr != nil {
+				// failed to build new request mostly because of invalid url or body
+				// try again or else return urlErr
+				parsed, urlErr := urlutil.ParseAbsoluteURL(opts.URL, true)
+				if urlErr != nil {
+					return nil, err
+				}
+				req, reqErr = http.NewRequest(opts.Method, parsed.Host, opts.Body)
+				if reqErr != nil {
+					return nil, err
+				}
+				req.URL = parsed.URL
+				req.Header = opts.Headers
+			}
+
+			// if req is still nil, return error
+			if req == nil {
+				return nil, err
+			}
+
 			req.Header = opts.Headers
 			resp = &http.Response{
 				Request:    req,