1 files changed, 29 insertions, 0 deletions
diff --git a/internal/proxy/forward.go b/internal/proxy/forward.go
new file mode 100644
index 0000000..7e40d8e
--- /dev/null
+++ b/internal/proxy/forward.go
@@ -0,0 +1,29 @@
+package proxy
+
+import (
+	"fmt"
+	"net/http"
+
+	internalhttp "github.com/shiv/internal/http"
+)
+
+func forward(req *http.Request, client *http.Client) (*http.Response, error) {
+	out, err := http.NewRequestWithContext(req.Context(), req.Method, req.URL.String(), req.Body)
+	if err != nil {
+		return nil, fmt.Errorf("forward: build request: %w", err)
+	}
+	for k, vals := range req.Header {
+		if internalhttp.HopByHop[k] {
+			continue
+		}
+		out.Header[k] = vals
+	}
+	internalhttp.StripRequestCacheHeaders(out.Header)
+
+	resp, err := client.Do(out)
+	if err != nil {
+		return nil, fmt.Errorf("forward: upstream request: %w", err)
+	}
+	internalhttp.StripResponseCacheHeaders(resp.Header)
+	return resp, nil
+}