httpclient.get crashes if resource is unavailable (server is down or file not exists)

[tkralj]

Hello, i encountered a problem with getting the file from server if server is unavailable or file does not exists on the server. http.get call returns 0 and crashes later on with guru meditation error:

Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC : 0x400014fd PS : 0x00060530 A0 : 0x800fd4e0 A1 : 0x3ffb1630
A2 : 0x00000194 A3 : 0x00000190 A4 : 0x000000ff A5 : 0x0000ff00
A6 : 0x00ff0000 A7 : 0xff000000 A8 : 0x00000000 A9 : 0x00000025
A10 : 0x3ffb1aa5 A11 : 0x3f402e68 A12 : 0x3ffb1aca A13 : 0x3f403f6e
A14 : 0x00000000 A15 : 0x00000000 SAR : 0x0000000a EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000194 LBEG : 0x400014fd LEND : 0x4000150d LCOUNT : 0xffffffff
Backtrace: 0x400014fd:0x3ffb1630 0x400fd4dd:0x3ffb1640 0x400fb57d:0x3ffb1950 0x400d7bfe:0x3ffb1a10 0x400d7d96:0x3ffb1df0 0x400d7fc3:0x3ffb1e50 0x400da5c6:0x3ffb1e70 0x400e0e3f:0x3ffb1fb0 0x40089fc1:0x3ffb1fd0

Here's the code:

TinyGsmClient clientHttp(modem);
HttpClient http(clientHttp, downloadServerName, 80);
http.beginRequest();
int err = http.get(downloadPath+fname);
Serial.println("return");
http.endRequest();
Serial.print("END request:");
Serial.println(err);
// here it crashes
int statusCode = http.responseStatusCode();
String body = http.responseBody();