public void setProtocols(final String protocols) {
            this.protocols = protocols.split("[ :,]");
        }
Specifies the protocols accepted for secure connections. If {@code null} or empty it will use the system's
default (all supported) protocols.

@param protocols Protocol list consisting of one or more protocols separated by colons, commas or spaces.
@return The protocols accepted for secure connections or null.
grpc-server-spring-boot-starter/src/main/java/net/devh/boot/grpc/server/config/GrpcServerProperties.java