public Builder addAllowedHost(@NonNull String host) {
            mConfig.allowedHosts.add(host);
            return this;
        }
Adds an ip host or a domain host that's allowed to capture.

@param host An ip host or a domain host, not support the domain host.
@return this {@link Builder} object to facilitate chaining method calls.
netbare-core/src/main/java/com/github/megatronking/netbare/NetBareConfig.java