I'm not familiar with the interaction of unique_ptr<> and exit().
What happens if you try the following:
grpc::Server* server_ptr = builder.BuildAndStart();
int childpid = fork();
if ( childpid )
exit(0);
server = std::unique_ptr<grpc::Server>(server_ptr);
Also, in the problem you stated, it sounded like you were forking and
exiting the child immediately. The code provided exits the parent process
immediately.
On Tue, Mar 7, 2017 at 1:32 PM, AK <[email protected]> wrote:
> No. The child does nothing but exit. Below is an example of what I am
> doing. If I move the server startup line to the end, everything works fine.
>
> server = std::unique_ptr<grpc::Server>(builder.BuildAndStart());
> int childpid = fork();
> if ( childpid )
> exit(0);
>
>
> On Tuesday, March 7, 2017 at 1:03:01 PM UTC-8, Ken Payson wrote:
>>
>> Are you calling any destructors in the forked process before exit?
>> Destroying the server will call shutdown() on the underlying sockets, which
>> will cause problems for the parent process.
>>
>> Ken
>>
>> On Tue, Mar 7, 2017 at 12:19 PM, AK <[email protected]> wrote:
>>
>>> The forked child simply exits leaving the parent as daemon. I am doing
>>> it in C++ on Ubuntu.
>>>
>>> On Tuesday, March 7, 2017 at 12:07:40 PM UTC-8, Nicolas Noble wrote:
>>>>
>>>> Does the forked child do any gRPC call at all ? Also, which language ?
>>>>
>>>> On Tue, Mar 7, 2017 at 9:40 AM, AK <[email protected]> wrote:
>>>>
>>>>>
>>>>> I am trying to make grpc server a daemon by forking a child and making
>>>>> it exit. But after that the client handshake starts to fail.
>>>>>
>>>>> E0307 01:15:58.221786152 27094 handshake.c:128] Security
>>>>> handshake failed:
>>>>> {"created":"@1488878158.221756436","description":"Handshake
>>>>> read failed","file":"src/core/lib/security/transport/handshake.c"
>>>>> ,"file_line":237,"referenced_errors":[{"created":"@
>>>>> 1488878158.221740996","description":"FD shutdown","file":"src/core/lib
>>>>> /iomgr/ev_epoll_linux.c","file_line":948}]}
>>>>>
>>>>> This happens if fork() is called after the call to BuildAndStart(). If
>>>>> the same fork is done before BuildAndStart() everything works fine.
>>>>>
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