Closed yomasa closed 8 years ago
igrr
commented
8 years ago This memory should be reclaimed after a couple of minutes, once TCP connection exists TIME_WAIT state. Are you sure that free heap doesn't return to the original value after a few minutes?
gpepe
commented
8 years ago not leek, but 20k eating this code:
`
WiFiServer server(80);
const char* ssid = "???"; const char* password = "???";
static const char eatHeap[] =
"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>" \
"\r\n
size_t orig;
void setup() { WiFi.begin(ssid, password); server.begin(); orig = ESP.getFreeHeap(); }
void loop() { WiFiClient client = server.available(); if (client) { String s; s += eatHeap; s += orig; s += "/"; s += ESP.getFreeHeap(); s += "
Basic Infos
looks like 184 bytes get lost every time you post to the page ie :'http://192.168.0.6/gpio/1'
Hardware
Hardware: ESP-12, wemos mini, esp-7 Core Version: 2.2.0-rc1
memory leak?
using the example sketch WifiWebServer added one line of code at the end of sketch
Serial.println( ESP.getFreeHeap(),DEC);
Settings in IDE
Module: wemos mini Flash Size: ?4MB/1MB? CPU Frequency: ?80Mhz? Flash Mode: ?qio? Flash Frequency: ?40Mhz? Upload Using: ?OTA / SERIAL? Reset Method: ?ck / nodemcu?
Sketch
/*
include
const char* ssid = "your-ssid"; const char* password = "your-password";
// Create an instance of the server // specify the port to listen on as an argument WiFiServer server(80);
void setup() { Serial.begin(115200); delay(10);
// prepare GPIO2 pinMode(2, OUTPUT); digitalWrite(2, 0);
// Connect to WiFi network Serial.println(); Serial.println(); Serial.print("Connecting to "); Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.println("WiFi connected");
// Start the server server.begin(); Serial.println("Server started");
// Print the IP address Serial.println(WiFi.localIP()); }
void loop() { // Check if a client has connected WiFiClient client = server.available(); if (!client) { return; }
// Wait until the client sends some data Serial.println("new client"); while(!client.available()){ delay(1); }
// Read the first line of the request String req = client.readStringUntil('\r'); Serial.println(req); client.flush();
// Match the request int val; if (req.indexOf("/gpio/0") != -1) val = 0; else if (req.indexOf("/gpio/1") != -1) val = 1; else { Serial.println("invalid request"); client.stop(); return; }
// Set GPIO2 according to the request digitalWrite(2, val);
client.flush();
// Prepare the response String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n\r\nGPIO is now "; s += (val)?"high":"low"; s += "\n";
// Send the response to the client client.print(s); delay(1); Serial.println("Client disonnected");
// The client will actually be disconnected // when the function returns and 'client' object is detroyed
Serial.println( ESP.getFreeHeap(),DEC);
}