refine UDP timeout

src/jconf.h

@@ -26,6 +26,7 @@
 #define MAX_CONF_SIZE 16 * 1024
 #define MAX_DNS_NUM 4
 #define MAX_CONNECT_TIMEOUT 10
+#define MAX_UDP_TIMEOUT 120
 
 typedef struct {
     char *host;

src/udprelay.c

@@ -1006,7 +1006,7 @@ int init_udprelay(const char *server_host, const char *server_port,
 #ifdef UDPRELAY_REMOTE
     server_ctx->loop = loop;
 #endif
-    server_ctx->timeout = min(timeout, MAX_CONNECT_TIMEOUT);
+    server_ctx->timeout = min(timeout, MAX_UDP_TIMEOUT);
     server_ctx->method = method;
     server_ctx->iface = iface;
     server_ctx->conn_cache = conn_cache;