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Wait for client.available() to prevent ESP32 crashes #3154

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Merged
merged 3 commits into from
Oct 2, 2019
Merged

Wait for client.available() to prevent ESP32 crashes #3154

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dde593a
Wait for client.available() to prevent ESP32 crashes
paynterf Aug 29, 2019
c17f0e3
Removed user-specific SSID & passphrase
paynterf Sep 6, 2019
e1a3a27
Merge branch 'master' into master
me-no-dev Oct 2, 2019
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31 changes: 25 additions & 6 deletions libraries/WiFi/examples/WiFiClientBasic/WiFiClientBasic.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -36,8 +36,10 @@ void setup()

void loop()
{
const uint16_t port = 80;
const char * host = "192.168.1.1"; // ip or dns
// const uint16_t port = 80;
// const char * host = "192.168.1.1"; // ip or dns
const uint16_t port = 1337;
const char * host = "192.168.1.10"; // ip or dns
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also unrelated change


Serial.print("Connecting to ");
Serial.println(host);
Expand All @@ -53,16 +55,33 @@ void loop()
}

// This will send a request to the server
client.print("Send this data to the server");

//uncomment this line to send an arbitrary string to the server
//client.print("Send this data to the server");
//uncomment this line to send a basic document request to the server
client.print("GET /index.html HTTP/1.1\n\n");

int maxloops = 0;

//wait for the server's reply to become available
while (!client.available() && maxloops < 1000)
{
maxloops++;
delay(1); //delay 1 msec
}
if (client.available() > 0)
{
//read back one line from the server
String line = client.readStringUntil('\r');
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so the issue is that readStringUntil timeouts

client.println(line);
Serial.println(line);
}
else
{
Serial.println("client.available() timed out ");
}

Serial.println("Closing connection.");
client.stop();

Serial.println("Waiting 5 seconds before restarting...");
delay(5000);
}