diff --git a/src/main.rs b/src/main.rs
index de3763d..a23c5a6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,28 +1,44 @@
 use regex::Regex;
 use std::collections::HashSet;
-use std::fs;
-use std::fs::read_to_string;
+use std::fmt::{Display, Formatter, Write};
+use std::{fmt, fs};
+use std::fs::{read_to_string, ReadDir};
 use std::os::unix::fs::MetadataExt;
-use crate::socket::socket::Id;
+use std::path::PathBuf;
+use crate::socket::socket::{Id, Tcp_Socket};
 
 type inode  = u64;
 type pid = u64;
 
+type pids = HashSet<pid>;
+
 mod socket;
 
-fn get_socket_inodes_by_pid(pid : u64, socket_patt : &Regex) -> Vec<inode> {
-    let mut inodes : Vec<inode> = Vec::<inode>::new();
+fn get_socket_inodes_by_pid(pid : u64, socket_patt : &Regex) -> HashSet<inode> {
+    let mut inodes  = HashSet::<inode>::new();
     let mut path = String::from("/proc/");
     path.push_str(&pid.to_string());
     path.push_str("/fd/");
-    let contents = fs::read_dir(path).expect("upsi 4 (proc kann nicht gelesen werden, Berechtigung?)");
+    let mut contents: ReadDir;
+    match fs::read_dir(path) {
+        Ok(dir) => {
+            contents = dir;
+        },
+        Err(_) => return HashSet::<inode>::new()
+    };
+
     for fd in contents {
         match fd {
             Ok(fd) => {
-                let name = fs::read_link(fd.path()).unwrap();
+                let path_name = fs::read_link(fd.path());
+                let mut name : PathBuf;
+                match path_name {
+                    Ok(link) => name = link,
+                    Err(_) => continue,
+                }
                 let name2 = name.file_name().unwrap().to_str().unwrap();
                 if socket_patt.is_match(name2) {
-                    inodes.push(socket_patt.captures(name2).unwrap().get(1).unwrap().as_str().parse::<u64>().unwrap())
+                    inodes.insert(socket_patt.captures(name2).unwrap().get(1).unwrap().as_str().parse::<u64>().unwrap());
                 }
             },
             Err(_) => continue,
@@ -31,6 +47,10 @@ fn get_socket_inodes_by_pid(pid : u64, socket_patt : &Regex) -> Vec<inode> {
     inodes
 }
 
+fn get_socket_by_inode(sockets : &HashSet<Tcp_Socket>, inode : u64) -> Option<Tcp_Socket> {
+    sockets.clone().iter().map(|x| x.to_owned()).find(|x|x.inode == inode)
+}
+
 fn get_tcp_file_by_pid(pid_pattern : &Regex, pid: pid) -> String {
     let mut path = String::from("/proc/");
     path.push_str(&pid.to_string());
@@ -38,8 +58,8 @@ fn get_tcp_file_by_pid(pid_pattern : &Regex, pid: pid) -> String {
     fs::read_to_string(path).unwrap().lines().skip(1).map(|x| x.to_owned()).collect::<Vec<String>>().join("\n")
 }
 
-fn parse_tcp_file_line(line : String) -> socket::socket::Socket {
-    socket::socket::Socket::new(socket::socket::Peer::build_from_hex(&get_index(line.clone(),1)), socket::socket::Peer::build_from_hex(&get_index(line.clone(),2)), Vec::<u64>::new(), socket::socket::SocketState::new(socket::socket::Peer::convert_port_hex_dec(&get_index(line.clone(), 3))), socket::socket::Id::create_def(), socket::socket::Id::create_def(), get_index(line, 9).parse().unwrap())
+fn parse_tcp_file_line(line : String) -> socket::socket::Tcp_Socket {
+    socket::socket::Tcp_Socket::new(socket::socket::Peer::build_from_hex(&get_index(&line.clone(),1)), socket::socket::Peer::build_from_hex(&get_index(&line.clone(),2)), HashSet::<u64>::new(), socket::socket::Tcp_SocketState::new(socket::socket::Peer::convert_port_hex_dec(&get_index(&line.clone(), 3))), socket::socket::Id::create_def(), socket::socket::Id::create_def(), get_index(&line, 9).parse().unwrap())
 }
 
 fn get_readable_proc_pids(pid_pattern : &Regex) -> Vec<pid>  {
@@ -47,7 +67,6 @@ fn get_readable_proc_pids(pid_pattern : &Regex) -> Vec<pid>  {
     let dirs = fs::read_dir("/proc/").expect("proc kann nicht gelesen werden, Berechtigung?");
     for dir in dirs {
         match dir {
-
             Ok(dir) => {
                 let name = dir.file_name().into_string().unwrap();
                 if !pid_pattern.is_match(&name) {
@@ -71,31 +90,124 @@ fn get_uid_guid_by_pid(pid : pid) -> (socket::socket::Id,socket::socket::Id) {
     let mut iter = status_file.lines();
     let uid_str = iter.find(|x| x.starts_with("Uid:")).unwrap().to_owned();
     let gid_str = iter.find(|x| x.starts_with("Gid:")).unwrap().to_owned();
-    (Id::new(get_index(uid_str.clone(), 1).parse().unwrap(), get_index(uid_str.clone(), 2).parse().unwrap(),
-             get_index(uid_str.clone(), 3).parse().unwrap(), get_index(uid_str, 4).parse().unwrap()),
-    Id::new(get_index(gid_str.clone(), 1).parse().unwrap(), get_index(gid_str.clone(), 2).parse().unwrap(),
-            get_index(gid_str.clone(), 3).parse().unwrap(), get_index(gid_str, 4).parse().unwrap()))
+    (Id::new(get_index(&uid_str.clone(), 1).parse().unwrap(), get_index(&uid_str.clone(), 2).parse().unwrap(),
+             get_index(&uid_str.clone(), 3).parse().unwrap(), get_index(&uid_str, 4).parse().unwrap()),
+    Id::new(get_index(&gid_str.clone(), 1).parse().unwrap(), get_index(&gid_str.clone(), 2).parse().unwrap(),
+            get_index(&gid_str.clone(), 3).parse().unwrap(), get_index(&gid_str, 4).parse().unwrap()))
 
 }
 
-fn get_all_tcp_sockets(pid_pattern : &Regex, socket_patt : &Regex) -> HashSet<socket::socket::Socket> {
-    let mut sockets = HashSet::<socket::socket::Socket>::new();
+fn add_pid_to_tcp_sockets(sockets : &mut Vec<Tcp_Socket>, inodes : HashSet<inode>, pid : pid) -> (){
+    let s2 = sockets.clone();
+    for (i, v) in s2.iter().enumerate(){
+        if inodes.contains(&v.inode) {
+            sockets.get_mut(i).unwrap().pids.insert(pid);
+        }
+    }
+}
+
+pub fn format_output(combination : socket::socket::Combination, sockets : &Vec<Tcp_Socket>) -> String{
+    let header_loc_ip = "Local Address";
+    let header_loc_port = "Port";
+    let header_rem_ip = "Remote Address";
+    let header_state = "State";
+    let header_rem_port = header_loc_port;
+    let mut ret_str = String::from("");
+    let mut max_loc_ip_len = header_loc_ip.len();
+    let mut max_loc_port_len = header_loc_port.len();
+    let mut max_rem_ip_len = header_rem_ip.len();
+    let mut max_rem_port_len = max_loc_port_len;
+    let mut max_state_len = header_state.len();
+    
+    if combination == socket::socket::Combination::tnp{
+        let header_uid_real = "real-uid";
+        let header_uid_eff = "effective-uid";
+        let header_gid_real = "real-gid";
+        let header_gid_eff = "effective-gid";
+        let header_pids = "PIDs";
+        let mut max_real_uid_len = header_uid_real.len();
+        let mut max_eff_uid_len = header_uid_eff.len();
+        let mut max_real_gid_len = header_gid_real.len();
+        let mut max_eff_gid_len = header_gid_eff.len();
+        let mut max_pids_len = header_pids.len();
+    }
+    sockets.clone().iter().for_each(|x| {
+
+        
+        let curr_loc_ip = x.get_loc_ip_string();
+        let curr_loc_ip_len = x.get_loc_ip_string().len();
+        let curr_loc_port = x.get_loc_port_string();
+        let curr_loc_port_len = curr_loc_port.len();
+        let curr_rem_ip = x.get_rem_ip_string();
+        let curr_rem_ip_len = curr_rem_ip.len();
+        let curr_rem_port = x.get_rem_port_string();
+        let curr_rem_port_len = curr_rem_port.len();
+        let curr_state = x.get_state().to_string();
+        let curr_state_len = curr_state.len();
+        max_loc_ip_len = if (curr_loc_ip_len > max_loc_ip_len) { curr_loc_ip_len } else { max_loc_ip_len };
+        max_loc_port_len = if (curr_loc_port_len > max_loc_port_len) { curr_loc_port_len } else { max_loc_port_len };
+        max_rem_ip_len = if (curr_rem_ip_len > max_rem_ip_len) { curr_rem_ip_len } else { max_rem_ip_len };
+        max_rem_port_len = if (curr_rem_port_len > max_rem_port_len) { curr_rem_port_len } else { max_rem_port_len };
+        max_state_len = if(curr_state_len > max_state_len) { curr_state_len } else { max_state_len };
+        
+        
+        
+        if combination == socket::socket::Combination::tnp{
+            
+        }
+    });
+    max_loc_ip_len = max_loc_ip_len + 3;
+    max_loc_port_len = max_loc_port_len + 3;
+    max_rem_ip_len = max_rem_ip_len + 3;
+    match combination {
+        socket::socket::Combination::tn => {
+            ret_str.push_str(&format!("{:>max_state_len$} {:>max_loc_ip_len$}:{:<max_loc_port_len$} {:>max_rem_ip_len$}:{:<max_rem_port_len$}\n", header_state , header_loc_ip , header_loc_port, header_rem_ip,header_rem_port));
+            sockets.clone().iter().for_each(|x| {
+               ret_str.push_str(&format!("{:>max_state_len$} {:>max_loc_ip_len$}:{:<max_loc_port_len$} {:>max_rem_ip_len$}:{:<max_rem_port_len$}", x.get_state().to_string(), x.get_loc_ip_string(), x.get_loc_port_string(), x.get_rem_ip_string(), x.get_rem_port_string()));
+                ret_str.push('\n');
+            });
+        }
+        socket::socket::Combination::tnp => {
+        }
+    }
+
+    ret_str
+}
+
+fn get_all_tcp_sockets(pid_pattern : &Regex, socket_patt : &Regex) -> Vec<socket::socket::Tcp_Socket> {
+    let mut sockets = Vec::<socket::socket::Tcp_Socket>::new();
     let pids = get_readable_proc_pids(pid_pattern);
+    let mut inodes = HashSet::<inode>::new();
     pids.iter().for_each(|x| {
         get_tcp_file_by_pid(&pid_pattern.clone(), *x).lines().for_each(|y| {
-            sockets.insert(parse_tcp_file_line(y.to_owned()));
-        })
+            add_to_tcp_sockets(&mut sockets, parse_tcp_file_line(y.to_owned()));
+        });
+        inodes = get_socket_inodes_by_pid(*x, socket_patt);
+        let (uid, gid) = get_uid_guid_by_pid(*x);
+        for (i, v) in sockets.clone().iter().enumerate() {
+            if inodes.contains(&v.inode){
+                add_pid_to_tcp_sockets(&mut sockets, inodes.clone(), *x);
+            }
+            Tcp_Socket::add_uid_gid(sockets.get_mut(i).unwrap(),uid, gid);
+        }
+
     });
     sockets
 }
 
-fn get_socket_info() -> Vec<socket::socket::Socket> {
-    let mut sockets = Vec::<socket::socket::Socket>::new();
+fn add_to_tcp_sockets(sockets : &mut Vec<socket::socket::Tcp_Socket>, socket: socket::socket::Tcp_Socket) -> (){
+    if !sockets.contains(&socket) {
+        sockets.push(socket);
+    }
+}
+
+fn get_socket_info() -> Vec<socket::socket::Tcp_Socket> {
+    let mut sockets = Vec::<socket::socket::Tcp_Socket>::new();
     sockets
 }
 
-fn get_index(line: String, index: usize) -> String {
-    line.split_whitespace().nth(index).expect("upsi").to_owned()
+fn get_index(line: &String, index: usize) -> String {
+    line.clone().split_whitespace().nth(index).expect("upsi").to_owned()
 }
 
 fn get_remote_address() {}
@@ -105,6 +217,5 @@ fn main() {
     let socket_patt : Regex = Regex::new(r"socket:\[([0-9]+)\]").expect("kannst kein regex?? xd");
     let pid_pattern = Regex::new(r"^[1-4]?[0-9]{1,6}$").expect("kannst kein regex??");
     let sockets = get_all_tcp_sockets(&pid_pattern, &socket_patt);
-    println!("{:?}", sockets);
-    println!("{}", sockets.len());
+    println!("{}", format_output(socket::socket::Combination::tn, &sockets));
 }
diff --git a/src/socket.rs b/src/socket.rs
index 2f7532e..c70381a 100644
--- a/src/socket.rs
+++ b/src/socket.rs
@@ -5,9 +5,9 @@ pub mod socket {
     use std::collections::HashSet;
     use std::fmt::Display;
     use std::fs;
-    use std::fs::read_to_string;
     use std::hash::{Hash, Hasher};
     use std::os::unix::fs::MetadataExt;
+    use crate::pids;
 
     #[derive(PartialEq)]
     #[derive(Clone)]
@@ -16,7 +16,7 @@ pub mod socket {
         pub ip_address: String,
         pub port: usize,
     }
-    #[derive(PartialEq)]
+    #[derive(PartialEq, Copy)]
     #[derive(Clone)]
     #[derive(Debug)]
     pub struct Id {
@@ -85,12 +85,21 @@ pub mod socket {
         pub fn convert_port_hex_dec(port: &str) -> usize {
             usize::from_str_radix(port, 16).expect("upsi 3")
         }
+
+        pub fn get_ip_string(&self) -> String {
+            self.clone().ip_address
+        }
+
+        pub fn get_port_string(&self) -> String{
+            if self.port == 0 { String::from("*")} else {self.port.to_string()}
+        }
+
     }
 
     #[derive(PartialEq)]
     #[derive(Clone)]
     #[derive(Debug)]
-    pub enum SocketState{
+    pub enum Tcp_SocketState {
         Established,
         SYN_Sent,
         SYN_Recv,
@@ -108,57 +117,67 @@ pub mod socket {
         Undefined,
     }
 
-    impl SocketState {
-        pub fn new(index : usize) -> SocketState {
+    impl Tcp_SocketState {
+        pub fn new(index : usize) -> Tcp_SocketState {
             match index {
-                1 => SocketState::Established,
-                2 => SocketState::SYN_Sent,
-                3 => SocketState::SYN_Recv,
-                4 => SocketState::FIN_Wait1,
-                5 => SocketState::FIN_Wait2,
-                6 => SocketState::TIME_Wait,
-                7 => SocketState::Close,
-                8 => SocketState::Close_Wait,
-                9 => SocketState::Last_ACK,
-                10 => SocketState::Listening,
-                11 => SocketState::Closing,
-                12 => SocketState::New_SYN_Recv,
-                13 => SocketState::Bound_Inactive,
-                14 => SocketState::Max_States,
-                _ => SocketState::Undefined,
+                1 => Tcp_SocketState::Established,
+                2 => Tcp_SocketState::SYN_Sent,
+                3 => Tcp_SocketState::SYN_Recv,
+                4 => Tcp_SocketState::FIN_Wait1,
+                5 => Tcp_SocketState::FIN_Wait2,
+                6 => Tcp_SocketState::TIME_Wait,
+                7 => Tcp_SocketState::Close,
+                8 => Tcp_SocketState::Close_Wait,
+                9 => Tcp_SocketState::Last_ACK,
+                10 => Tcp_SocketState::Listening,
+                11 => Tcp_SocketState::Closing,
+                12 => Tcp_SocketState::New_SYN_Recv,
+                13 => Tcp_SocketState::Bound_Inactive,
+                14 => Tcp_SocketState::Max_States,
+                _ => Tcp_SocketState::Undefined,
             }
         }
 
         pub fn to_string(&self) -> String {
             match self {
-                SocketState::Established => String::from("Established"),
-                SocketState::SYN_Sent => String::from("SYN_Sent"),
-                SocketState::SYN_Recv => String::from("SYN_Recv"),
-                SocketState::FIN_Wait1 => String::from("FIN_Wait1"),
-                SocketState::FIN_Wait2 => String::from("FIN_Wait2"),
-                SocketState::TIME_Wait => String::from("TIME_Wait"),
-                SocketState::Close => String::from("Close"),
-                SocketState::Close_Wait => String::from("Close_Wait"),
-                SocketState::Last_ACK => String::from("Last_ACK"),
-                SocketState::Listening => String::from("Listening"),
-                SocketState::Closing => String::from("Closing"),
-                SocketState::New_SYN_Recv => String::from("New_SYN_Recv"),
-                SocketState::Bound_Inactive => String::from("Bound_Inactive"),
-                SocketState::Max_States => String::from("Max_States"),
-                SocketState::Undefined => String::from("Undefined"),
+                Tcp_SocketState::Established => String::from("Established"),
+                Tcp_SocketState::SYN_Sent => String::from("SYN_Sent"),
+                Tcp_SocketState::SYN_Recv => String::from("SYN_Recv"),
+                Tcp_SocketState::FIN_Wait1 => String::from("FIN_Wait1"),
+                Tcp_SocketState::FIN_Wait2 => String::from("FIN_Wait2"),
+                Tcp_SocketState::TIME_Wait => String::from("TIME_Wait"),
+                Tcp_SocketState::Close => String::from("Close"),
+                Tcp_SocketState::Close_Wait => String::from("Close_Wait"),
+                Tcp_SocketState::Last_ACK => String::from("Last_ACK"),
+                Tcp_SocketState::Listening => String::from("Listening"),
+                Tcp_SocketState::Closing => String::from("Closing"),
+                Tcp_SocketState::New_SYN_Recv => String::from("New_SYN_Recv"),
+                Tcp_SocketState::Bound_Inactive => String::from("Bound_Inactive"),
+                Tcp_SocketState::Max_States => String::from("Max_States"),
+                Tcp_SocketState::Undefined => String::from("Undefined"),
             }
         }
     }
 
-    impl PartialEq for Socket {
+    pub fn pids_to_string(pids : pids) -> String {
+        let mut ret_str = String::from("");
+        pids.iter().for_each(|x| {
+            ret_str.push_str(&x.to_string());
+            ret_str.push_str(", ");
+        });
+        ret_str.drain(ret_str.len()-2..ret_str.len());
+        ret_str
+    }
+
+    impl PartialEq for Tcp_Socket {
         fn eq(&self, other: &Self) -> bool {
             return self.inode == other.inode;
         }
     }
 
-    impl Eq for Socket {}
+    impl Eq for Tcp_Socket {}
 
-    impl Hash for Socket {
+    impl Hash for Tcp_Socket {
         fn hash<H : Hasher>(&self, state: &mut H) -> (){
            let mut state = self.inode * 31;
             state = state + 11;
@@ -166,19 +185,25 @@ pub mod socket {
     }
 
     #[derive(Clone, Debug)]
-    pub struct Socket {
+    pub struct Tcp_Socket {
         peer_loc: Peer,
         peer_rem: Peer,
-        pids: Vec<u64>,
-        state : SocketState,
+        pub pids: HashSet<u64>,
+        state : Tcp_SocketState,
         user : Id,
         group : Id,
-        inode : u64
+        pub inode : u64
     }
 
-    impl Socket {
-        pub fn new(peer_loc : Peer, peer_rem : Peer, pids : Vec<u64>, state : SocketState, user : Id, group : Id, inode : u64) -> Socket {
-            Socket {
+    #[derive(Clone,Copy, PartialEq)]
+    pub enum Combination{
+        tnp,
+        tn,
+    }
+
+    impl Tcp_Socket {
+        pub fn new(peer_loc : Peer, peer_rem : Peer, pids : HashSet<u64>, state : Tcp_SocketState, user : Id, group : Id, inode : u64) -> Tcp_Socket {
+            Tcp_Socket {
                 peer_loc,
                 peer_rem,
                 pids,
@@ -200,29 +225,81 @@ pub mod socket {
             inode
         }
 
+        pub fn add_pid(socket : &mut Tcp_Socket, pid : u64) -> () {
+            socket.pids.insert(pid);
+        }
+
+        pub fn add_uid_gid(socket : &mut Tcp_Socket, uid : Id, gid : Id) -> (){
+            socket.user = uid;
+            socket.group = gid;
+        }
+
         pub fn check_inode_seen(seen_inodes : &HashSet<u64>, pid : u64) -> bool {
-            let inode = Socket::get_tcp_file_inode(pid);
+            let inode = Tcp_Socket::get_tcp_file_inode(pid);
             seen_inodes.contains(&inode)
         }
 
         pub fn add_inode(seen_inodes : &mut HashSet<u64>, pid: u64){
-           let inode = Socket::get_tcp_file_inode(pid);
+           let inode = Tcp_Socket::get_tcp_file_inode(pid);
            seen_inodes.insert(inode);
         }
 
-        pub fn to_string (self) -> String {
+        pub fn get_loc_ip_string(&self) -> String{
+            self.peer_loc.get_ip_string()
+        }
+
+        pub fn get_loc_port_string(&self) -> String{
+            self.peer_loc.get_port_string()
+        }
+
+        pub fn get_rem_ip_string(&self) -> String{
+            self.peer_rem.get_ip_string()
+        }
+
+        pub fn get_rem_port_string(&self) -> String{
+            self.peer_rem.get_port_string()
+        }
+
+        pub fn to_string (&self, combination: Combination) -> String {
             let mut ret_str = String::from("");
-            ret_str.push_str(&self.peer_loc.ip_address);
-            ret_str.push(':');
-            let loc_port_str = self.peer_loc.port.clone().to_string();
-            ret_str.push_str(if self.peer_loc.port == 0 { "*" } else { &loc_port_str });
-            ret_str.push(' ');
-            ret_str.push_str(&self.peer_rem.ip_address);
-            ret_str.push(':');
-            let rem_port_str = self.peer_rem.port.clone().to_string();
-            ret_str.push_str(if self.peer_rem.port == 0 { "*" } else { &rem_port_str });
-            ret_str.push('\n');
-            ret_str
+            match combination {
+                Combination::tnp => {
+                    //state rem_ip:rem_port loc_ip:loc_port real|effective-uid real|effective-gid pids(.,.,.,.)
+                    ret_str.push_str(&self.clone().to_string(Combination::tn));
+                    ret_str.push(' ');
+                    ret_str.push_str(&self.user.real.to_string());
+                    ret_str.push('|');
+                    ret_str.push_str(&self.user.effective.to_string());
+                    ret_str.push(' ');
+                    ret_str.push_str(&self.group.real.to_string());
+                    ret_str.push('|');
+                    ret_str.push_str(&self.group.effective.to_string());
+                    ret_str.push_str(&pids_to_string(self.clone().pids));
+                    ret_str
+
+                }
+                Combination::tn => {
+                    //state rem_ip:rem_port loc_ip:loc_port
+                    ret_str.push_str(&self.state.to_string());
+                    ret_str.push(' ');
+                    ret_str.push_str(&self.peer_loc.ip_address);
+                    ret_str.push(':');
+                    let loc_port_str = self.peer_loc.port.clone().to_string();
+                    ret_str.push_str(if self.peer_loc.port == 0 { "*" } else { &loc_port_str });
+                    ret_str.push(' ');
+                    ret_str.push_str(&self.peer_rem.ip_address);
+                    ret_str.push(':');
+                    let rem_port_str = self.peer_rem.port.clone().to_string();
+                    ret_str.push_str(if self.peer_rem.port == 0 { "*" } else { &rem_port_str });
+                    ret_str.push('\n');
+                    ret_str
+                }
+            }
+
+        }
+
+        pub fn get_state(&self) -> Tcp_SocketState{
+            self.state.clone()
         }
 
         fn get_all_unique_socket_infos() -> String {
@@ -244,8 +321,8 @@ pub mod socket {
                         let mut path = dir.path().into_os_string().into_string().expect("gehtnd");
                         path.push_str("/net/tcp");
                         let pid = &path.split("/").nth(2).expect("gesplittert");
-                        if !Socket::check_inode_seen(&seen_inodes, pid.parse::<u64>().unwrap()) {
-                            Socket::add_inode(& mut seen_inodes, pid.parse::<u64>().unwrap());
+                        if !Tcp_Socket::check_inode_seen(&seen_inodes, pid.parse::<u64>().unwrap()) {
+                            Tcp_Socket::add_inode(& mut seen_inodes, pid.parse::<u64>().unwrap());
                             let test = &fs::read_to_string(path)
                                 .expect("Could not read proc/pid/net/tcp")
                                 .lines()
@@ -272,11 +349,11 @@ pub mod socket {
 
 #[cfg(test)]
 mod tests {
-
+    use crate::socket::socket::Combination;
     use super::*;
 
-    fn init_sockets() -> Vec<socket::Socket> {
-        let mut sockets = Vec::<socket::Socket>::new();
+    fn init_sockets() -> Vec<socket::Tcp_Socket> {
+        let mut sockets = Vec::<socket::Tcp_Socket>::new();
         let root_uid = socket::Id::new(0,0,0,0);
         let root_gid = root_uid.clone();
         let mux_uid = socket::Id::new(1000,1000,1000,1000);
@@ -298,8 +375,8 @@ mod tests {
     #[test]
     fn test_to_string() -> () {
         let sockets = init_sockets();
-        assert_eq!("93.83.160.12:21345 0.0.0.0:*\n", sockets[0].clone().to_string());
-        assert_eq!("195.201.90.97:8843 0.0.0.0:443\n", sockets[1].clone().to_string());
-        assert_eq!("255.255.255.255:193193 0.0.0.0:8080\n", sockets[2].clone().to_string());
+        assert_eq!("93.83.160.12:21345 0.0.0.0:*\n", sockets[0].clone().to_string(Combination::tn));
+        assert_eq!("195.201.90.97:8843 0.0.0.0:443\n", sockets[1].clone().to_string(Combination::tn));
+        assert_eq!("255.255.255.255:193193 0.0.0.0:8080\n", sockets[2].clone().to_string(Combination::tn));
     }
 }