API Server Rotation (#13)

* Initial implementation

* Add server find to settings

* Update Aminet Readme

Author: sandlbn

assets/aminet/TuneFinderMUI.README

@@ -2,7 +2,7 @@ Short:        Search+play online radio stations (MUI)
 Author:       [email protected] (Marcin Spoczynski)
 Uploader:     [email protected] (Marcin Spoczynski)
 Type:         comm/misc
-Version:      0.6-beta
+Version:      0.7-beta
 Architecture: m68k-amigaos >= 3.0
 Requires:     MUI 3.8+
 Distribution: Aminet
@@ -56,4 +56,11 @@ TuneFinderMUI 0.4 beta (1.01.2024)
 TuneFinderMUI 0.6 beta (12.01.2024)
 
 - Configurable HTTPS streams filter with state persistence
-- Number of small fixes
+- Number of small fixes
+
+TuneFinderMUI 0.7 beta (20.04.2025)
+- Added automatic Radio Browser API server rotation
+- Implemented DNS discovery of available API servers
+- Added "Next Server" button to manually switch between servers
+- Improved resilience against server outages with multi-server fallback
+- Enhanced error recovery with automatic retries on different servers

include/locale.h

@@ -25,6 +25,7 @@ enum {
     MSG_ACTION_STOP,
     MSG_ACTION_FAV_ADD,
     MSG_ACTION_FAV_REMOVE,
+    MSG_ACTION_SAVE,
 
     // GUI States (20-29)
     MSG_STATE_READY = 20,
@@ -134,7 +135,8 @@ enum {
     MSG_ASLREQ_SELECT_AMIGAAMP = 140,   // "Select AmigaAmp executable"
     MSG_STATUS_SEARCH_RESULT = 141,      // "Found %ld tune(s), in %lu second(s) [Limit: %lu]"
     MSG_STATUS_ALREADY_FAV = 142,    // "Station already in favorites"
-    MSG_STATUS_NOT_IN_FAV = 143     // "Station not in favorites"
+    MSG_STATUS_NOT_IN_FAV = 143,     // "Station not in favorites"
+    EVENT_SETTINGS_NEXT_SERVER = 200
 
 };
 

include/main.h

@@ -31,8 +31,8 @@
 
 // Application defines
 #define APP_NAME "TuneFinder MUI"
-#define APP_DATE "12.01.2025"
-#define APP_VERSION "0.6-beta"
+#define APP_DATE "20.04.2025"
+#define APP_VERSION "0.7-beta"
 #define APP_VERSTRING "$VER: " APP_NAME " " APP_VERSION " (" APP_DATE ")"
 #define APP_AUTHORS "Coding: Marcin Spoczynski\nGUI Design: Philippe Carpentier\nIcons: Thomas Blatt\n"
 #define APP_COPYRIGHT "Free to use and distribute"
@@ -48,7 +48,7 @@
 // API Settings
 #define API_HOST_ACCEPT \
   "0123456789abcdefghijklmnopqrstuvwxyz:/?#[]@!$&'()*+,;=%-_.~"
-#define API_HOST_DEFAULT "de1.api.radio-browser.info"
+#define API_HOST_DEFAULT "de2.api.radio-browser.info"
 #define API_HOST_MAX_LEN (1024)
 
 #define API_PORT_ACCEPT "0123456789"
@@ -153,6 +153,8 @@ struct ObjApp {
   APTR STR_Settings_AmigaAmp;   // String for AmigaAmp path
   APTR CHK_Settings_Iconify;     // Checkbox for iconify option
   APTR CHK_Settings_QuitAmigaAMP;
+  APTR BTN_Settings_API_Next_Server;
+  APTR TXT_Settings_Current_Server;
   struct CountryConfig countryConfig;
 
 };

include/network.h

@@ -3,13 +3,23 @@
 
 #include "data.h"
 #include "main.h"
+#include "settings.h"
+
 
 #define API_ENDPOINT "/json/stations/search"
 #define MAX_URL_LENGTH 2048
 #define INITIAL_BUFFER_SIZE (64 * 1024)  // 64 kb :) 
 #define MAX_BUFFER_SIZE (64 * 1024 * 1024) // 4MB maximum
 #define PREFERRED_BUFFER_SIZE (2 * 1024 * 1024) // 2MB preferred
 #define READ_CHUNK_SIZE (8 * 1024)         // Read 8KB at a time
+#define MAX_API_SERVERS 10
+struct APIServerList {
+    char servers[MAX_API_SERVERS][MAX_HOST_LEN];
+    int count;
+    int current;
+    BOOL initialized;
+};
+static struct APIServerList g_serverList = {{{0}}, 0, 0, FALSE};
 
 enum {
     HTTPS_ALL = 0,   // Any stations
@@ -28,6 +38,8 @@ struct Tune *SearchStations(const struct APISettings *settings,
                                   const struct SearchParams *params,
                                   LONG *count);
 void UpdateStatusMessage(const char *msg);
-
+BOOL GetAPIServerList(void);
+const char *GetNextAPIServer(void);
+const char *GetCurrentAPIServer(void);
 
 #endif /* NETWORK_H */

src/app.c

@@ -31,6 +31,7 @@
 #include "../include/locale.h"
 #include "../include/utils.h"
 #include "../include/amigaamp.h"
+#include "../include/network.h"
 #include "../include/countries.h"
 #include "../include/country_config.h"
 #include "../include/settings.h"
@@ -969,7 +970,7 @@ void CreateWindowSettings(struct ObjApp *obj) {
   APTR group0, group1, group2;
 
   // Controls
-    obj->BTN_Settings_Save = SimpleButton(GetTFString(MSG_ACTION_SAVE_ALL));     // "Save"
+    obj->BTN_Settings_Save = SimpleButton(GetTFString(MSG_ACTION_SAVE));     // "Save"
     obj->BTN_Settings_Cancel = SimpleButton(GetTFString(MSG_ACTION_CANCEL));     // "Cancel"
 
   obj->STR_Settings_AmigaAmp = StringObject,
@@ -1008,6 +1009,7 @@ void CreateWindowSettings(struct ObjApp *obj) {
   MUIA_String_Format, MUIV_String_Format_Left, MUIA_String_MaxLen,
   API_HOST_MAX_LEN, MUIA_String_Contents, API_HOST_DEFAULT, 
   MUIA_FixWidthTxt, "wwwwwwwwwwwwwwwwwwwwwwwwww", End;
+  obj->BTN_Settings_API_Next_Server = SimpleButton("Next Server");
 
   // Port (Integer 0 to 65535)
   obj->STR_Settings_API_Port = StringObject, MUIA_Frame, MUIV_Frame_String,
@@ -1055,7 +1057,10 @@ void CreateWindowSettings(struct ObjApp *obj) {
         MUIA_Frame, MUIV_Frame_Group,
         MUIA_HorizWeight, 200, 
         Child, Label(GetTFString(MSG_OPTION_API_HOST)),
-        Child, obj->STR_Settings_API_Host,
+        Child, HGroup,
+            Child, obj->STR_Settings_API_Host,
+            Child, obj->BTN_Settings_API_Next_Server,
+        End,
         Child, Label(GetTFString(MSG_OPTION_API_PORT)),
         Child, child1,
         Child, Label(GetTFString(MSG_GUI_LIMIT)), 
@@ -1128,7 +1133,8 @@ void CreateWindowSettingsEvents(struct ObjApp *obj) {
   //
     DoMethod(obj->BTN_Settings_AmigaAmp_Browse, MUIM_Notify, MUIA_Pressed, FALSE,
   obj->App, 2, MUIM_Application_ReturnID, EVENT_SETTINGS_BROWSE_AMIGAAMP);
-
+    DoMethod(obj->BTN_Settings_API_Next_Server, MUIM_Notify, MUIA_Pressed, FALSE,
+            obj->App, 2, MUIM_Application_ReturnID, EVENT_SETTINGS_NEXT_SERVER);
   // Window
   DoMethod(obj->WIN_Settings, MUIM_Notify, MUIA_Window_CloseRequest, TRUE,
            obj->App, 2, MUIM_Application_ReturnID, EVENT_SETTINGS_CANCEL);
@@ -1245,4 +1251,16 @@ BOOL APP_ShowFavorites(void)
     }
 
     return TRUE;
-}
+}
+
+BOOL APP_Settings_Next_Server(void) {
+    DEBUG("%s", "APP_Settings_Next_Server()\n");
+    
+    // Get the next server
+    const char *server = GetNextAPIServer();
+    
+    // Update the host field
+    set(objApp->STR_Settings_API_Host, MUIA_String_Contents, server);
+    
+    return TRUE;
+}

src/locale.c

@@ -36,7 +36,7 @@ static const char *built_in_strings[] = {
     "Stop Tune",    // 16
     "Add",         // 17
     "Delete",         // 18
-    NULL,           // 19
+    "Save",           // 19
 
     // GUI States (20-28)
     "Ready",        // 20

src/main.c

@@ -371,6 +371,9 @@ int main(void) {
             case EVENT_SETTINGS_CANCEL:
               APP_Settings_Cancel();
               break;  
+            case EVENT_SETTINGS_NEXT_SERVER:
+              APP_Settings_Next_Server();
+              break;
             case EVENT_SETTINGS_BROWSE_AMIGAAMP: {
             struct FileRequester *req;
             char path[256];