server : bump request URI max length to 32768 (ggml-org#16862)

Author: chansikpark

tools/server/utils.hpp

@@ -13,6 +13,8 @@
 #define CPPHTTPLIB_FORM_URL_ENCODED_PAYLOAD_MAX_LENGTH 1048576
 // increase backlog size to avoid connection resets for >> 1 slots
 #define CPPHTTPLIB_LISTEN_BACKLOG 512
+// increase max URI length to handle longer prompts in query string
+#define CPPHTTPLIB_REQUEST_URI_MAX_LENGTH 32768
 // disable Nagle's algorithm
 #define CPPHTTPLIB_TCP_NODELAY true
 #include <cpp-httplib/httplib.h>