boolean OTAUpdateClass::downloadFile(const char* name) {
// make some http requests to check for firmware updates
LGPRSClient c;
uint8_t buffer[DIGEST_SIZE_BUFFER];
int n , size, max_millis;
// download the firmware
if(!c.connect(this->host, 80)) {
DEBUG_UPDATE("OTAUpdate::downloadFile - error connecting to update host\r\n");
return false;
}
// connected... send the get request
DEBUG_UPDATE("OTAUpdate::downloadFile %s:80 'GET /%s/%s'\r\n", this->host, this->path, &name[4]);
c.printf("GET /%s/%s\n", this->path, &name[4]);
// save the result
max_millis = millis() + 10000;
LFlash.begin();
LFlash.remove((char*) name);
LFile ota = LFlash.open(name, FILE_WRITE);
ota.seek(0);
size = 0;
while(c.connected()) {
int n = c.read(buffer, 1024);
if(n > 0) {
max_millis = millis() + 2000;
ota.write(buffer, n);
size += n;
} else {
if(millis() > max_millis) {
DEBUG_UPDATE("OTAUpdate::downloadFile - timed out!\r\n");
c.stop();
ota.close();
return false;
} else {
delay(100);
}
}
}
c.stop();
ota.close();
DEBUG_UPDATE("OTAUpdate::downloadFile - done! got %d bytes\r\n", size);
return size > 0;
}
boolean OTAUpdateClass::downloadFile(const char* name) {
// make some http requests to check for firmware updates
LGPRSClient c;
uint8_t buffer[DIGEST_SIZE_BUFFER];
int n , size, max_millis;
char buff[256];
static char endofheader[5] ;
boolean HTTPHeaderreached = false;
char byc;
//convert string to int
String sthostport = this->port;
unsigned int uinthostport = sthostport.toInt();
// download the firmware
if(!c.connect(this->host, uinthostport)) {
DEBUG_UPDATE("OTAUpdate::downloadFile - error connecting to update host\r\n");
return false;
}
// connected... send the get request
DEBUG_UPDATE("OTAUpdate::downloadFile %s:%d 'GET /%s/%s'\r\n", this->host, uinthostport, this->path, &name[4]);
sprintf(buff, "GET /%s/%s", this->path, &name[4]);
c.print(buff);
//c.printf("GET /%s/%s", this->path, &name[4]);
c.println(" HTTP/1.1");
c.print("Host: ");
c.println(this->host);
c.println("Connection: close");
c.println();
// save the result
max_millis = millis() + 10000;
LFlash.begin();
LFlash.remove((char*) name);
LFile ota = LFlash.open(name, FILE_WRITE);
ota.seek(0);
size = 0;
// get data content of the file
while(c.connected()) {
//skip byte until end of HTTP Header
if(HTTPHeaderreached == false) {
// read byte
byc = c.read();
if(byc > 0) {
max_millis = millis() + 2000;
// if HTTP header is not reached, read until find double CRLF
Serial.print(byc);
// proceed a right shift of the array
for(int i = 0; i < 3; i++) {
endofheader[i] = endofheader[i+1];
}
// add last received char at the end of the array
endofheader[3] = byc;
//don't forget null caracter
endofheader[4] = '\0';
// compare array with end of HTTP header key (double CRLF)
if (strcmp("\r\n\r\n", endofheader ) == 0) {
// return true
DEBUG_UPDATE("OTAUpdate::downloadFile - end of HTTP header reached\r\n");
HTTPHeaderreached = true;
}
else {
HTTPHeaderreached = false;
}
}
else {
if(millis() > max_millis) {
DEBUG_UPDATE("OTAUpdate::downloadFile - timed out!\r\n");
c.stop();
ota.close();
return false;
} else {
delay(100);
}
}
}
else {
int n = c.read(buffer, 1024);
if(n > 0) {
max_millis = millis() + 2000;
ota.write(buffer, n);
size += n;
DEBUG_UPDATE("size = %d\r", size);
} else {
if(millis() > max_millis) {
DEBUG_UPDATE("OTAUpdate::downloadFile - timed out!\r\n");
c.stop();
ota.close();
return false;
} else {
delay(100);
}
}
}
}
c.stop();
ota.close();
DEBUG_UPDATE("\r\nOTAUpdate::downloadFile - done! got %d bytes\r\n", size);
return size > 0;
}