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    use std::net::SocketAddr;
    use network::Magic;
    use message::common::{Services, NetAddress};
    use message::types::version::{Version, V0, V106, V70001};
    use util::time::{Time, RealTime};
    use util::nonce::{NonceGenerator, RandomNonce};

    #[derive(Debug, Clone)]
    pub struct Config {
    	pub protocol_version: u32,
    	pub protocol_minimum: u32,
    	pub magic: Magic,
    	pub local_address: SocketAddr,
    	pub services: Services,
    	pub user_agent: String,
    	pub start_height: i32,
    	pub relay: bool,
    }

    impl Config {
    	pub fn version(&self, to: &SocketAddr) -> Version {
    		Version::V70001(V0 {
    			version: self.protocol_version,
    			services: self.services,
    			timestamp: RealTime.get().sec,
    			receiver: NetAddress {
    				services: self.services,
    				address: to.ip().into(),
    				port: to.port().into(),
    			},
    		}, V106 {
    			from: NetAddress {
    				services: self.services,
    				address: self.local_address.ip().into(),
    				port: self.local_address.port().into(),
    			},
    			nonce: RandomNonce.get(),
    			user_agent: self.user_agent.clone(),
    			start_height: self.start_height,
    		}, V70001 {
    			relay: self.relay,
    		})
    	}
    }

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