diff --git a/http.go b/http.go
index 6bbb580..ba1d245 100644
--- a/http.go
+++ b/http.go
@@ -116,6 +116,10 @@ func (r *Request) responseNotSent() bool {
 	return r.state <= rsSent
 }
 
+func (r *Request) hasSent() bool {
+	return r.state >= rsSent
+}
+
 func (r *Request) releaseBuf() {
 	if r.raw != nil {
 		httpBuf.Put(r.rawByte)
diff --git a/proxy.go b/proxy.go
index da70de9..ecf14c1 100644
--- a/proxy.go
+++ b/proxy.go
@@ -367,7 +367,7 @@ func (c *clientConn) serve() {
 			sv.Close()
 			if c.shouldRetry(&r, sv, err) {
 				goto retry
-			} else if err == errPageSent && (!r.hasBody() || r.state >= rsSent) {
+			} else if err == errPageSent && (!r.hasBody() || r.hasSent()) {
 				// Can only continue if request has no body, or request body
 				// has been read.
 				continue