improved template to support multipart substitution

user/cgi.c

@@ -29,15 +29,68 @@ int ICACHE_FLASH_ATTR tplCounter(HttpdConnData *connData, char *token, void **ar
 		os_sprintf(buff, "%ld", hitCounter);
 	}
 	httpdSend(connData, buff, -1);
+
 	return HTTPD_CGI_DONE;
 }
 
 
+
 typedef struct {
 	uint32_t count_remain;
 } RandomNumberState;
 
 
+//Template code for the counter on the index page.
+int ICACHE_FLASH_ATTR tplMultipart(HttpdConnData *connData, char *token, void **arg)
+{
+	if (token == NULL) {
+		if (*arg != NULL) free(*arg);
+		return HTTPD_CGI_DONE; // cleanup
+	}
+
+	if (os_strcmp(token, "numbers") == 0) {
+		RandomNumberState *rns = *arg;
+		char buff[20];
+
+		if (rns == NULL) {
+			//First call to this cgi. Open the file so we can read it.
+			rns=(RandomNumberState *)malloc(sizeof(RandomNumberState));
+			*arg=rns;
+
+			// parse count
+			uint32_t count = 1;
+			int len = httpdFindArg(connData->getArgs, "count", buff, sizeof(buff));
+			if (len==-1) {
+				// no such get arg
+			} else {
+				count = (uint32_t)atoi(buff);
+			}
+			rns->count_remain = count;
+
+			printf("User wants %d numbers.", count);
+		}
+
+		for (int i = 0; i < 100; i++) {
+			os_sprintf(buff, "<li>%lu\n", os_random());
+			httpdSend(connData, buff, -1);
+
+			if (--rns->count_remain == 0) {
+				break;
+			}
+		}
+
+		if (rns->count_remain == 0) {
+			free(rns);
+			return HTTPD_CGI_DONE;
+		}
+
+		return HTTPD_CGI_MORE;
+	}
+
+	return HTTPD_CGI_DONE;
+}
+
+
 // better to put it in the fs...
 
 int FLASH_FN cgiRandomNumbers(HttpdConnData *connData) {

user/cgi.h

@@ -8,4 +8,6 @@ int tplCounter(HttpdConnData *connData, char *token, void **arg);
 
 int cgiRandomNumbers(HttpdConnData *connData);
 
+int tplMultipart(HttpdConnData *connData, char *token, void **arg);
+
 #endif

user/user_main.c

@@ -28,6 +28,16 @@
 
 #include "sbmp.h"
 
+#define SHOW_HEAP_USE
+
+#ifdef SHOW_HEAP_USE
+static ETSTimer prHeapTimer;
+
+static void ICACHE_FLASH_ATTR prHeapTimerCb(void *arg) {
+	os_printf("Heap: %ld\n", (unsigned long)system_get_free_heap_size());
+}
+#endif
+
 
 /**
  * @brief BasicAuth name/password checking function.
@@ -101,6 +111,8 @@ static HttpdBuiltInUrl builtInUrls[] = {
 	{"*", cgiRedirectApClientToHostname, "esp8266.nonet"}, // redirect func for the captive portal
 	{"/", cgiEspFsTemplate, (void *)tplCounter},
 
+	{"/multipart.tpl", cgiEspFsTemplate, (void *)tplMultipart},
+
 	{"/random.tpl", cgiRandomNumbers, NULL},
 
 //Enable the line below to protect the WiFi configuration with an username/password combo.
@@ -166,6 +178,12 @@ void user_init(void)
 
 	os_printf("\nReady\n");
 
+#ifdef SHOW_HEAP_USE
+	os_timer_disarm(&prHeapTimer);
+	os_timer_setfn(&prHeapTimer, prHeapTimerCb, NULL);
+	os_timer_arm(&prHeapTimer, 3000, 1);
+#endif
+
 //	// print TEST on the command interface every 500 ms
 //	os_timer_disarm(&prTestTimer);
 //	os_timer_setfn(&prTestTimer, test_timer_task, NULL);