How to get client ip from request metadata with grpc-java

Client IP is not provided in Metadata. But you can call ServerCall.attributes() and get the Grpc.TRANSPORT_ATTR_REMOTE_ADDR.

Please note that the API is unstable and may change.

In latest (1.2.0) gRPC use io.grpc.Grpc.TRANSPORT_ATTR_REMOTE_ADDR attribute in interceptor to get remote address.

if in python grpc, you will get client ip address and port using context.peer().

def your_method(self, request, context):
    ...
    context.peer() # return 'ipv4:49.123.106.100:44420'
    ...

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