Wrong read length on POST request

[Fernando-Castilho]

Hi, it's me again, first of all, sorry for not texting you back, I was awaiting for my arduino mega, since uno didn't had enough memory to run the code so couldn't test it until yesterday. I think the code is almost done, when my readers are correct (with the println() before the --X-ARDUINO_MULTIPART), it cannot read the fingerprint correctly, every time I get a error of wrong read length: -1, sometimes it says packet to long: 130, but it's rare. I don't know why this is happening, my server responds with unexpected end of file, so I know that at least one chunk of the file is being send. My code is:

uint16_t count = 0;
bool read_finished;
/* indicate the max size to read, and also returns how much was actually read */
uint16_t readlen = TRANSFER_SZ;

client.println("POST /post HTTP/1.1");
client.println("Host: 192.168.1.107");
client.println("Content-Type: multipart/form-data; boundary=X-ARDUINO_MULTIPART");
client.println("Connection: close");
client.println("Content-Length: 36864");
client.println();
client.println("--X-ARDUINO_MULTIPART");

while (true) {
  bool ret = finger.readRaw(FPM_OUTPUT_TO_BUFFER, buffer, &read_finished, &readlen);
  if (ret) {
    count++;
    client.println("Content-Disposition: form-data; name=\"blah.bmp\"");
    client.println("Content-Type: application/octet-stream");
    client.print("Content-Length: ");
    client.println(readlen);
    client.println();
    client.write(buffer, readlen);

    /* indicate the length to be read next time like before */
    readlen = TRANSFER_SZ;
    if (read_finished){
      client.println();
      client.println("--X-ARDUINO_MULTIPART--");
      client.println();
      client.flush();
      break;
    }
    client.println();
    client.println("--X-ARDUINO_MULTIPART");
    client.flush();
  }
  else {
    Serial.print("\r\nError receiving packet ");
    Serial.println(count);
    return;
  }
  yield();
}

I think that could help. My serial monitor messages:

Image taken
Starting image stream...

[+]Wrong chksum: 0x9444
[+]Response timeout

[+]Wrong read length: -1

Error receiving packet 29

Also, thanks a lot for the help, I didn't had any idea of how could I post the image, if I progress sometime, I will notify here.

[brianrho]

It's fine, i re-opened the old issue #48, you can continue this there, I already left a comment.