Hi,
I am getting a ENETUNREACH error when trying to connect a socket via
the GCDAsyncSocket library:
Error Domain=NSPOSIXErrorDomain Code=51 "Network is unreachable"
UserInfo=0x15e802c0 {NSLocalizedFailureReason=Error in connect()
function, NSLocalizedDescription=Network is unreachable}
The socket connection is for a custom protocol. However, HTTP requests
via NSURLSession are succeeding over the cellular interface around the
same time. I know that network connectivity changed before the connect
failures started - prior HTTP requests used to go over the wifi
connection. My guess is that iOS is somehow trying to use the bad wifi
interface for the socket connection whereas HTTP connections are going
over cellular. Is that likely? If so how do I detect such situations
and go over the cellular interface?
I have read that using the POSIX socket API directly might not wake up
an inactive cellular interface but in this case the HTTP requests
should be keeping it active, right?
Thanks
Imran
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