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Diffstat (limited to 'docs/FAQ')
| -rw-r--r-- | docs/FAQ | 24 |
1 files changed, 23 insertions, 1 deletions
@@ -80,6 +80,7 @@ FAQ 4.17 Non-functional connect timeouts on Windows 4.18 file:// URLs containing drive letters (Windows, NetWare) 4.19 Why doesn't cURL return an error when the network cable is unplugged? + 4.20 curl doesn't return error for HTTP non-200 responses! 5. libcurl Issues 5.1 Is libcurl thread-safe? @@ -1086,7 +1087,28 @@ FAQ immediately if its lone network connection goes down. That can be achieved by having the application monitor the network connection on its own using an OS-specific mechanism, then signalling libcurl to abort (see also item 5.13). - + + 4.20 curl doesn't return error for HTTP non-200 responses! + + Correct. Unless you use -f (--fail). + + When doing HTTP transfers, curl will perform exactly what you're asking it + to do and if successful it will not return an error. You can use curl to + test your web server's "file not found" page (that gets 404 back), you can + use it to check your authentication protected web pages (that get a 401 + back) and so on. + + The specific HTTP response code does not constitute a problem or error for + curl. It simply sends and delivers HTTP as you asked and if that worked, + everything is fine and dandy. The response code is generally providing more + higher level error information that curl doesn't care about. The error was + not in the HTTP transfer. + + If you want your command line to treat error codes in the 400 and up range + as errors and thus return a non-zero value and possibly show an error + message, curl has a dedicated option for that: -f (CURLOPT_FAILONERROR in + libcurl speak). + 5. libcurl Issues |