Issues When ESP32 WiFi Receives Data #12061
Description
Board
eg.ESP32 Dev Module
Device Description
Hardware Configuration
GPIO 0 and 4 are connected to UART2
Version
3.2.0
Type
Question
IDE Name
VSCode
Operating System
Windows 11
Flash frequency
eg.40MHZ
PSRAM enabled
no
Upload speed
eg.115200
Description
When calling the receive function of WIFICLIENT, the read function encountered an error and reported the following error：“assertion "pbuf_free: p->ref > 0" failed: file "/home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/core/pbuf.c", line 766, function: pbuf_free
abort() was called at PC 0x4011dc23 on core 1”，The specific problem occurs in the following code：：“_telnetClients[i].read(buf, readlen);”please see the Sketch.
Sketch
if (_telnetClients[i].available()) {
uint8_t buf[1024];
COMMANDS::wait(0);
int readlen = _telnetClients[i].available();
int writelen = TELNETRXBUFFERSIZE - available();
if (readlen > 1024) {
readlen = 1024;
}
if (readlen > writelen) {
readlen = writelen;
}
if (readlen > 0) {
_telnetClients[i].read(buf, readlen);
push(buf, readlen);
}
return;
}
} else {
if (_telnetClients[i]) {
# ifdef ENABLE_TELNET_WELCOME_MSG
_telnetClientsIP[i] = IPAddress(0, 0, 0, 0);
# endif
_telnetClients[i].stop();
}
}
COMMANDS::wait(0);
}Debug Message
assertion "pbuf_free: p->ref > 0" failed: file "/home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/core/pbuf.c", line 766, function: pbuf_free
abort() was called at PC 0x4011dc23 on core 1
Other Steps to Reproduce
No response
I have checked existing issues, online documentation and the Troubleshooting Guide
- I confirm I have checked existing issues, online documentation and Troubleshooting guide.