Added resolve-hostnames example program.

CMakeLists.txt

@@ -29,3 +29,6 @@ target_link_libraries(voipchat PRIVATE SDL3_net::SDL3_net SDL3::SDL3)
 
 add_executable(simple-http-get examples/simple-http-get.c)
 target_link_libraries(simple-http-get PRIVATE SDL3_net::SDL3_net SDL3::SDL3)
+
+add_executable(resolve-hostnames examples/resolve-hostnames.c)
+target_link_libraries(resolve-hostnames PRIVATE SDL3_net::SDL3_net SDL3::SDL3)

SDL_net.c

@@ -1465,63 +1465,3 @@ int SDLNet_WaitUntilInputAvailable(void **vsockets, int numsockets, int timeoutm
 
  return retval;
 }
-
-
-#if 0 // some test code.
-#include <stdio.h>
-
-int main(int argc, char **argv)
-{
- if (SDLNet_Init() < 0) {
- SDL_Log("SDLNet_Init() failed: %s", SDL_GetError());
- return 1;
- }
-
-#if 1
- SDLNet_StreamSocket *stream;
- if (argc > 1) {
- SDLNet_Server *server = SDLNet_CreateServer(NULL, 7997);
- SDLNet_WaitUntilConnected(server);
- SDLNet_AcceptClient(server, &stream);
- } else {
- SDLNet_Address *addr = SDLNet_ResolveHostname("localhost");
- SDLNet_WaitUntilResolved(addr, -1);
- stream = SDLNet_CreateClient(addr, 7997);
- SDLNet_WaitUntilConnected(stream, -1);
- }
-
- printf("\n\nConnected!\n\n");
-
- fcntl(fileno(stdin), F_SETFL, fcntl(fileno(stdin), F_GETFL, 0) | O_NONBLOCK);
-
- while (1) {
- char buf[128];
- buf[0] = '\0';
- fgets(buf, sizeof (buf), stdin);
- if (buf[0]) {
- SDLNet_WriteToStreamSocket(stream, buf, SDL_strlen(buf));
- }
- const int br = SDLNet_ReadStreamSocket(stream, buf, sizeof (buf));
- if (br > 0) {
- fwrite(buf, 1, br, stdout);
- }
- }
-#endif
-
-#if 0
- //SDLNet_SimulateAddressResolutionLoss(3000, 30);
-
- SDLNet_Address **addrs = (SDLNet_Address **) SDL_calloc(argc, sizeof (SDLNet_Address *));
- for (int i = 1; i < argc; i++) {
- addrs[i] = SDLNet_ResolveHostname(argv[i]);
- }
-
- for (int i = 1; i < argc; i++) {
- SDLNet_WaitUntilResolved(addrs[i], -1);
- }
-#endif
-
- SDLNet_Quit();
- return 0;
-}
-#endif

examples/resolve-hostnames.c

@@ -0,0 +1,38 @@
+/*
+ * This is just for demonstration purposes! This doesn't
+ * do anything as complicated as, say, the `dig` utility.
+ *
+ * All this to say: don't use this for anything serious!
+ */
+
+#include <stdio.h>
+#include <SDL3/SDL.h>
+#include <SDL3/SDL_main.h>
+#include "SDL_net.h"
+
+int main(int argc, char **argv)
+{
+ if (SDLNet_Init() < 0) {
+ SDL_Log("SDLNet_Init() failed: %s", SDL_GetError());
+ return 1;
+ }
+
+ //SDLNet_SimulateAddressResolutionLoss(3000, 30);
+
+ SDLNet_Address **addrs = (SDLNet_Address **) SDL_calloc(argc, sizeof (SDLNet_Address *));
+ for (int i = 1; i < argc; i++) {
+ addrs[i] = SDLNet_ResolveHostname(argv[i]);
+ }
+
+ for (int i = 1; i < argc; i++) {
+ const char *str;
+ SDLNet_WaitUntilResolved(addrs[i], -1);
+ str = SDLNet_GetAddressString(addrs[i]);
+ SDL_Log("%s: %s", argv[i], str ? str : "[FAILED TO RESOLVE]");
+ SDLNet_UnrefAddress(addrs[i]);
+ }
+
+ SDLNet_Quit();
+
+ return 0;
+}