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improved http error handling

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* don't treat 404 as http error
* real errors return -1 and disconnect
* -1 is treated as real error
This commit is contained in:
ac-stef
2015-09-07 14:53:57 +02:00
parent 58e033a1e3
commit 68c3ea43b1
3 changed files with 17 additions and 14 deletions
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source/src/http.cpp
+10 -7
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@@ -6,7 +6,7 @@
#define CR 13
#define LF 10
#define TCP_TIMEOUT 5678 // only re-use quite fresh connections
#define ERROR(msg) { err = msg; return -1; }
#define ERROR(msg) { err = msg; goto geterror; }
const char lfcrlf[] = { LF, CR, LF, 0x00 }, *crlf = lfcrlf + 1;
@@ -108,7 +108,7 @@ int httpget::get(const char *url1, uint timeout, uint totaltimeout, int range, b
bool reconnected = false, retry = false;
for(;;)
{ // (in a loop because of possible redirects)
if(!connect()) return -1;
if(!connect()) goto geterror;
// assemble GET request
cvecprintf(rawsnd, "%s %s HTTP/1.1%s", head ? "HEAD" : "GET", url, crlf);
@@ -148,7 +148,7 @@ int httpget::get(const char *url1, uint timeout, uint totaltimeout, int range, b
}
elapsedtime = to.elapsed();
if(elapsedtime > totaltimeout || elapsedtime > lastresponse + timeout) ERROR("timeout 1");
if(execcallback(-float(elapsedtime - lastresponse) / timeout)) return -1; // show progress bar, check for user interrupt
if(execcallback(-float(elapsedtime - lastresponse) / timeout)) goto geterror; // show progress bar, check for user interrupt
}
// get response
@@ -197,8 +197,8 @@ int httpget::get(const char *url1, uint timeout, uint totaltimeout, int range, b
if(p) p = strchr(p, ' ');
response = p ? atoi(p + 1) : -1;
if(p) p = strchr(p, '\n');
if(!p || response < 200 || response > 307) ERROR("server error");
if(response >= 300) // handle redirects
if(!p) ERROR("server error"); // header frame error
if(response >= 300 && response < 308) // handle redirects
{
p = strstr(header_uc + (p - header), "LOCATION: ");
if(p) p = header + (p - header_uc);
@@ -274,7 +274,7 @@ int httpget::get(const char *url1, uint timeout, uint totaltimeout, int range, b
}
rawrec.drop();
}
if(execcallback(progress)) return -1; // show progress bar, check for user interrupt
if(execcallback(progress)) goto geterror; // show progress bar, check for user interrupt
if(content || (haveheader && head)) break;
}
if(retry && !reconnected)
@@ -325,9 +325,12 @@ int httpget::get(const char *url1, uint timeout, uint totaltimeout, int range, b
if(outvec) outvec->insert(outvec->length(), (const uchar *)content->getbuf(), res);
if(outstream) outstream->write(content->getbuf(), res);
}
geterror:
if(res > maxsize) err = "output truncated";
elapsedtime = to.elapsed();
return res;
if(err) disconnect();
return err ? -1 : res;
}
char *urlencode(const char *s, bool strict)