Initial commit

internal/domains/deconnector/forward.go

@@ -0,0 +1,36 @@
+package deconnector
+
+import (
+	"bufio"
+	"fmt"
+	"net"
+	"net/http"
+	"net/url"
+)
+
+func (d *Deconnector) forwardHTTP(clientConn net.Conn, req *http.Request, upstreamURL *url.URL) {
+	upstreamConn, err := d.dialer.Dial()
+	if err != nil {
+		d.app.Logger().WithError(err).Error("upstream dial failed")
+		fmt.Fprintf(clientConn, "HTTP/1.1 502 Bad Gateway\r\n\r\n")
+
+		return
+	}
+	defer upstreamConn.Close()
+
+	if err := req.WriteProxy(upstreamConn); err != nil {
+		d.app.Logger().WithError(err).Error("failed to write request")
+
+		return
+	}
+
+	resp, err := http.ReadResponse(bufio.NewReader(upstreamConn), req)
+	if err != nil {
+		d.app.Logger().WithError(err).Error("failed to read response")
+
+		return
+	}
+
+	defer resp.Body.Close()
+	resp.Write(clientConn)
+}