esp8266 NodeMCU client cant connect to esp8266 NodeMCU server with static ip - client-server

Question

Hello...
My code is working perfect with using dynamic IP's, the LED is connected to server and a push button is connected to client, it work perfect with dynamic IP's addresses of both devices. But when i make static IP addresses, the client can not connect to server, and it always says connection failed.
Client code is:
#include <ESP8266WiFi.h>
//IPAddress staticIP612_61(192,168,100,59);
//IPAddress gateway612_61(192,168,100,1);
//IPAddress subnet612_61(255,255,255,0);
const char* ssid = "GravixarATD"; // Your wifi Name
const char* password = "TheRedMonster79"; // Your wifi Password
const char * host = "192.168.100.23"; // IP Server
const int httpPort = 80;
const char* Commands; // The command variable that is sent to the server
int button = 5; // push button is connected
bool btn_press = true; // The variable to detect the button has been pressed
int con = 0; // Variables for mode
void setup() {
// put your setup code here, to run once:
pinMode(button, INPUT_PULLUP); // initialize the pushbutton pin as an input:
Serial.begin(115200); // initialize serial:
Serial.println("");
Serial.println("Client-------------------------------");
Serial.print("Connecting to Network");
WiFi.mode(WIFI_STA); // Mode Station
WiFi.begin(ssid, password); // Matching the SSID and Password
delay(1000);
// Waiting to connect to wifi
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(500);
}
Serial.println("");
Serial.println("Successfully Connecting");
Serial.println("Status : Connected");
//WiFi.config(staticIP612_61, gateway612_61, subnet612_61);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
Serial.println("-------------------------------------");
Serial.println("");
}
void loop() {
// put your main code here, to run repeatedly:
if (digitalRead(button) == LOW) {
Serial.println("Client-------------------------------");
Serial.print("Send Command = ");
if (btn_press == true){
if (con >= 2) {
con=0;
}
con++;
switch (con){
case 1:
Commands="LED_On";
Serial.println(Commands);
send_commands();
break;
case 2:
Commands="LED_Off";
Serial.println(Commands);
send_commands();
break;
}
btn_press = false;
}
}
else {
btn_press = true;
}
delay(100);
}
void send_commands(){
Serial.println("Sending command...");
Serial.println("Don't press the button for now...");
Serial.println("");
Serial.print("Connecting to ");
Serial.println(host);
// Use WiFiClient class to create TCP connections
WiFiClient client;
if (!client.connect(host, httpPort)) {
Serial.println("Connection failed");
return;
}
// We now create a URI for the request
Serial.print("Requesting URL : ");
Serial.println(Commands);
// This will send the request to the server
client.print(String("GET ") + Commands + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "Connection: Close\r\n\r\n");
unsigned long timeout = millis();
while (client.available() == 0) {
if (millis() - timeout > 5000) {
Serial.println(">>> Client Timeout !");
client.stop();
return;
}
}
Serial.print("Server Reply = ");
// Read all the lines of the reply from server and print them to Serial
while(client.available()){
String line = client.readStringUntil('\r');
Serial.print(line);
}
Serial.println("Now you can press the button ...");
Serial.println("-------------------------------------");
Serial.println("");
}
Server code is:
#include <ESP8266WiFi.h>
//IPAddress staticIP612_60(192,168,100,60);
//IPAddress gateway612_60(192,168,100,1);
//IPAddress subnet612_60(255,255,255,0);
int led = 5; // the pin the LED is connected to
const char* ssid = "GravixarATD"; // Your wifi Name
const char* password = "TheRedMonster79"; // Your wifi Password
const char* Commands_Reply; // The command variable that is sent to the client
const char * host = "192.168.100.21"; // IP Client
WiFiServer server(80);
void setup() {
// put your setup code here, to run once:
pinMode(led, OUTPUT); // Declare the LED as an output
Serial.begin(115200); // initialize serial:
delay(10);
Serial.println("");
Serial.println("Server-------------------------------");
Serial.print("Configuring access point");
WiFi.begin(ssid, password);
// Waiting to connect to wifi
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
// WiFi.config(staticIP612_60, gateway612_60, subnet612_60);
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.print("Use this URL to connect: ");
Serial.print("http://");
Serial.print(WiFi.localIP());
Serial.println("/");
Serial.println("-------------------------------------");
Serial.println("");
}
void loop() {
// put your main code here, to run repeatedly:
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Wait until the client sends some data
Serial.println("Server-------------------------------");
Serial.println("New client");
Serial.print("From client = ");
while(!client.available()){
delay(1);
}
// Read the first line of the request -------------------------------------
String req = client.readStringUntil('\r');
Serial.println(req);
client.flush();
//Command LED -------------------------------------------------------------
if (req.indexOf("LED_On") != -1){
Commands_Reply = "LED Status : On";
Serial.print("Server send = ");
Serial.println(Commands_Reply);
client.print(String("GET ") + Commands_Reply + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "Connection: close\r\n\r\n");
digitalWrite(led, HIGH);
}
else if (req.indexOf("LED_Off") != -1){
Commands_Reply = "LED Status : Off";
Serial.print("Server send = ");
Serial.println(Commands_Reply);
client.print(String("GET ") + Commands_Reply + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "Connection: close\r\n\r\n");
digitalWrite(led, LOW);
}
else {
Serial.println("invalid request");
client.stop();
return;
}
client.flush();
Serial.println("Client disonnected");
Serial.println("-------------------------------------");
Serial.println("");
}
NOTE I have commented all the static IP lines, when i comment them and using dynamic ips, client connect to server perfectly and when i use static ips instead of dynamic ips client fails to connect with server. any help will be appreciated.