diff --git a/src/patch/main.rs b/src/patch/main.rs
index 91de59f..81a1e68 100644
--- a/src/patch/main.rs
+++ b/src/patch/main.rs
@@ -4,16 +4,17 @@ use std::net;
 use std::thread;
 use std::fs;
 use std::io;
-use std::io::{Read, Write};
+use std::io::{Read};
 use std::path::{Path, PathBuf, Components};
 use std::convert::AsRef;
-use mio::{Events, Poll, Token, Ready, PollOpt};
 use rand::{Rng, RngCore};
 use crc::{crc32, Hasher32};
 use libpso::{PacketParseError, PSOPacket};
 use libpso::packet::patch::*;
 use libpso::crypto::pc::PSOPCCipher;
-use elseware::common::network::{send_packet, recv_packet, PacketNetworkError};
+use elseware::pktvec;
+use elseware::common::pktvec::PktVec;
+use elseware::common::network::{PacketNetworkError};
 use elseware::common::client::Client;
 use elseware::common::serverstate::{ServerPacket, ServerState, OnConnect};
 
@@ -143,14 +144,13 @@ impl ServerState for PatchServerState {
     fn handle(&mut self, pkt: &PatchPacket) -> Box<dyn Iterator<Item = Box<dyn PSOPacket>>> {
         match pkt {
             PatchPacket::PatchWelcomeReply(_pkt) => {
-                let p: Vec<Box<dyn PSOPacket>> = vec![Box::new(RequestLogin {})];
-                Box::new(p.into_iter())
+                pktvec![RequestLogin {}]
             },
             PatchPacket::LoginReply(_pkt) => {
-                let mut p: Vec<Box<dyn PSOPacket>> = vec![Box::new(Message::new("hello player".to_string()))];
-                p.append(&mut get_file_list_packets(&self.patch_file_tree));
+                let mut p = pktvec![Message::new("hello player".to_string())];
+                p.append(get_file_list_packets(&self.patch_file_tree));
                 p.push(Box::new(PatchEndList {}));
-                Box::new(p.into_iter())
+                p
             },
             PatchPacket::FileInfoReply(pkt) => {
                 self.patch_file_info.push(pkt.clone());
@@ -164,10 +164,10 @@ impl ServerState for PatchServerState {
                 let total_size = need_update.iter().fold(0, |a, file_info| a + file_info.size);
                 let total_files = need_update.len() as u32;
 
-                let p: Vec<Box<dyn PSOPacket>> = vec![Box::new(FilesToPatchMetadata::new(total_size, total_files)),
-                                                      Box::new(PatchStartList {}),
+                let p = pktvec![FilesToPatchMetadata::new(total_size, total_files),
+                                PatchStartList {}
                 ];
-                Box::new(p.into_iter().chain(SendFileIterator::new(&self)))
+                Box::new(p.chain(SendFileIterator::new(&self)))
             }
         }
     }
@@ -263,10 +263,10 @@ struct SendFileIterator {
 
 impl SendFileIterator {
     fn new(state: &PatchServerState) -> SendFileIterator {
-        let need_update = state.patch_file_info.iter()
+        let file_ids_to_update = state.patch_file_info.iter()
             .filter(|file_info| does_file_need_updating(file_info, &state.patch_file_lookup))
-            .collect::<Vec<_>>();
-        let file_ids_to_update = need_update.iter().map(|k| k.id).collect::<HashSet<_>>();
+            .map(|k| k.id)
+            .collect::<HashSet<_>>();
 
         SendFileIterator {
             done: false,