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Objective C Console Errors Should I be worried?

Hello,

(First sorry for the new user name, it wouldn't allow me back in...)

I sucessfully upgraded my app to use API v2 Objective C - however when running from the simulator when checking if I have an active account I get the following errors in the log - but they don't seem to stop anything and I can't locate where they are occurring.

2017-01-05 13:50:46.148 AppName[11111:111111] You are linked: <DropboxClient: 0x600000245a90>

2017-01-05 13:50:46.179 AppName[11111:111111] App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file.

2017-01-05 13:50:46.196738 AppName[11111:111111] PAC Fetch failed with error [NSURLErrorDomain:-1022]

2017-01-05 13:50:46.197575 AppName[11111:111111] [] nw_proxy_resolver_create_parsed_array PAC evaluation error: NSURLErrorDomain: -1022

It seems to occur after this call

self.restClient.filesRoutes

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Accepted answers

Greg-DB

Thanks for the additional information! I can't reproduce this issue using your code though, so it does seem there's something else going on.

I took a closer look at the output you shared, and the PAC/proxy messages cite error 1022, which is NSURLErrorAppTransportSecurityRequiresSecureConnection. That indicates it is the proxy attempt that's causing the App Transport Security failure.

The simulator uses your computers network connection, so I recommend checking the System Preferences > Network > Advanced > Proxies > Automatic Proxy Configuration for a Proxy Configuration File hosted on http://.

All comments

Greg-DB

The Dropbox API operates entirely over HTTPS, so it shouldn't trigger a message like that. Are you sure that's the only thing running when you get this?

purringpgeon

Yes - my app only uses dropbox to call out. Everything else is 100% local. I am not running anything else from the simulator (that I am aware of).

Even added this to my plist file:

<key>NSAppTransportSecurity</key>
    <dict>
        <key>NSAllowsArbitraryLoads</key>
        <false/>
    </dict>

It only seems to happen on that one call I noted above, I get the HTTP warning, and the other two errors. But my app works just fine. So I am confused.

Greg-DB

The other output seems to indicate that you may be trying to use a proxy, configured via a pac file. Is the pac file hosted on HTTP?

Otherwise, can you share the rest of the code? What you shared was incomplete. I'll be happy to try to reproduce it.

purringpgeon

Hi Greg,

I don't know what a PAC file is

Basically I am doing the following:

Check for existing back up - which consists of 4 files which is this call:

[[self.restClient.filesRoutes listFolder:@""]response:^(DBFILESListFolderResult * _Nullable result, DBFILESListFolderError * _Nullable routeError, DBRequestError * _Nullable error) {

When this lands in the response section - that's when I get those three messages. I don't get them for:

 [[self.restClient.filesRoutes uploadData:@/ServiceReport.sqlite
                    mode:mode
                    autorename: NULL
                    clientModified:NULL
                    mute:NULL
                    inputData:sqllite]response:^(DBFILESFileMetadata * _Nullable result , DBFILESUploadError * _Nullable routeError, DBRequestError * _Nullable error) {

Or this one:

 [[self.restClient.filesRoutes downloadData:@/ServiceReport.sqlite]response:^(DBFILESFileMetadata * _Nullable result, DBFILESDownloadError * _Nullable downloaderror, DBRequestError * _Nullable error, NSData * _Nonnull fileData) {

I can post my entire controller here if you would like - other than the auth - which I think is pretty standard stuff.

Greg-DB

Thanks for the additional information! I can't reproduce this issue using your code though, so it does seem there's something else going on.

purringpgeon

Well - I never would have seen that - I had Auto Proxy Detection on. Turned that off and the message went away.

Thanks!