http/server: add http_set_max_body_size

include/re_http.h

@@ -202,6 +202,7 @@ int  https_listen(struct http_sock **sockp, const struct sa *laddr,
 		  const char *cert, http_req_h *reqh, void *arg);
 int  https_set_verify_msgh(struct http_sock *sock,
 			   https_verify_msg_h *verifyh);
+void http_set_max_body_size(struct http_sock *sock, size_t limit);
 struct tcp_sock *http_sock_tcp(struct http_sock *sock);
 struct tls *http_sock_tls(const struct http_sock *conn);
 const struct sa *http_conn_peer(const struct http_conn *conn);

src/http/server.c

@@ -31,6 +31,7 @@ struct http_sock {
 	struct tls *tls;
 	http_req_h *reqh;
 	https_verify_msg_h *verifyh;
+	size_t max_body_size;
 	void *arg;
 };
 
@@ -212,7 +213,8 @@ static void recv_handler(struct mbuf *mb, void *arg)
 
 		const size_t len = mbuf_get_left(mb), pos = conn->mb->pos;
 
-		if ((mbuf_get_left(conn->mb) + len) > BUFSIZE_MAX) {
+		if ((mbuf_get_left(conn->mb) + len) >
+		    conn->sock->max_body_size) {
 			err = EOVERFLOW;
 			goto out;
 		}
@@ -376,6 +378,7 @@ int http_listen_fd(struct http_sock **sockp, re_sock_t fd, http_req_h *reqh,
 
 	sock->reqh = reqh;
 	sock->arg  = arg;
+	sock->max_body_size = BUFSIZE_MAX;
 
 out:
 	if (err)
@@ -416,6 +419,7 @@ int http_listen(struct http_sock **sockp, const struct sa *laddr,
 
 	sock->reqh = reqh;
 	sock->arg  = arg;
+	sock->max_body_size = BUFSIZE_MAX;
 
  out:
 	if (err)
@@ -496,6 +500,21 @@ int  https_set_verify_msgh(struct http_sock *sock,
 }
 
 
+/**
+ * Set Request buffer size limit
+ *
+ * @param sock  HTTP socket
+ * @param limit New limit in bytes
+ */
+void http_set_max_body_size(struct http_sock *sock, size_t limit)
+{
+	if (!sock)
+		return;
+
+	sock->max_body_size = limit;
+}
+
+
 /**
  * Get the TCP socket of an HTTP socket
  *