Thanks, will give that a shot

On Monday, February 26, 2018 at 7:56:37 PM UTC, Feng Xiao wrote:
>
>
>
>
> On Mon, Feb 26, 2018 at 5:54 AM <[email protected] <javascript:>> 
> wrote:
>
>> Hello,
>>
>> I'm hoping someone can help me out a bit here..
>>
>> I've developed a C++ GRPC server (Question is protobuf specific though), 
>> that talks with a Java client. The C++ server takes data from an older C++ 
>> API and converts it to protobuf and then uses GRPC to send the data.
>>
>> However it appears that there may be a bug in the older API and i'm 
>> occasionally being sent garbage in some char*, which when they get to java 
>> result in an Protocol message had invalid UTF-8.
>>
>> It seems slightly odd that on the C++ side the protobuf is happy to 
>> accept and encode invalid data, but the Java side throws an exception.
>>
>> Is there anyway from the C++ side to validate the messages strings before 
>> they are sent. I've noticed if i convert the message to JSON the strings 
>> just stop at the first invalid character they reach. I looked at trying to 
>> find a simple UTF8 validation in C++ but not had much luck with this (Sorry 
>> C++ is really noy my main language)
>>
> You can use protobuf's VerifyUtf8String() method:
>
> https://github.com/google/protobuf/blob/master/src/google/protobuf/wire_format_lite.h#L345
>  
>
>>
>> Developing in Visual Studio 2017 with C++11 support
>>
>> Thanks,
>> Robin
>>
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