Die 169.* ist doch falsch.
Der Client hat keine zugewiesene IP-Adresse sondern macht ein link-local.
Wenn der AP 192.168.4.1 hat, gib mal der Client im setup:
IPAddress ip(192, 168, 4, 5);
IPAddress dns(192, 168, 4, 1);
IPAddress gateway(192, 168, 4, 1);
IPAddress subnet(255, 255, 255, 0);
WiFi.config(ip, dns, gateway, subnet);
Vollständig:
void setup() {
Serial.begin(115200);
// We start by connecting to a WiFi network
IPAddress ip(192, 168, 4, 5);
IPAddress dns(192, 168, 4, 1);
IPAddress gateway(192, 168, 4, 1);
IPAddress subnet(255, 255, 255, 0);
WiFi.config(ip, dns, gateway, subnet);
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
/* Explicitly set the ESP8266 to be a WiFi-client, otherwise, it by default,
would try to act as both a client and an access-point and could cause
network-issues with your other WiFi-devices on your WiFi-network. */
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
Variable host "192.168.4.1"
Als Port nicht 17.
Der Server läuft auf 80.
const char* host = "192.168.4.1";
const uint16_t port = 80;
Dann sollte nach dem Connect irgendwas kommen.