diff --git a/hptp-recv/src/main.rs b/hptp-recv/src/main.rs
index 2cd28ba..1d2e115 100644
--- a/hptp-recv/src/main.rs
+++ b/hptp-recv/src/main.rs
@@ -1,41 +1,5 @@
-use std::str::FromStr;
-
 extern crate hptp;
 
-#[derive(Debug)]
-struct Hostname {
-    ip: String,
-    port: u16,
-}
-
-struct InvalidHostnameError;
-
-impl FromStr for Hostname {
-    type Err = InvalidHostnameError;
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
-        let i = s.find(':').ok_or(InvalidHostnameError)?;
-        Ok(Hostname {
-            ip: s[..i].into(),
-            port: s[i + 1..].parse().map_err(|_| InvalidHostnameError)?,
-        })
-    }
-}
-
-fn usage() {
-    print!("usage:\n./3700recv <host-ip>:<host-port>\n")
-}
-
-fn parse_args() -> Result<Hostname, ()> {
-    std::env::args().nth(1).ok_or(())?.parse().map_err(|_| ())
-}
-
 fn main() {
-    match parse_args() {
-        Ok(x) => start(x),
-        Err(_) => usage(),
-    }
-}
-
-fn start(hn: Hostname) {
-    println!("ip={}, port={}", hn.ip, hn.port)
+    println!("{}", hptp::RECV_GREETING);
 }
diff --git a/hptp-send/src/main.rs b/hptp-send/src/main.rs
index c6d4d76..d200e36 100644
--- a/hptp-send/src/main.rs
+++ b/hptp-send/src/main.rs
@@ -1,5 +1,41 @@
+use std::str::FromStr;
+
 extern crate hptp;
 
-fn main() {
-    println!("{}", hptp::SEND_GREETING);
+#[derive(Debug)]
+struct Hostname {
+    ip: String,
+    port: u16,
+}
+
+struct InvalidHostnameError;
+
+impl FromStr for Hostname {
+    type Err = InvalidHostnameError;
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let i = s.find(':').ok_or(InvalidHostnameError)?;
+        Ok(Hostname {
+            ip: s[..i].into(),
+            port: s[i + 1..].parse().map_err(|_| InvalidHostnameError)?,
+        })
+    }
+}
+
+fn usage() {
+    print!("usage:\n./3700send <host-ip>:<host-port>\n")
+}
+
+fn parse_args() -> Result<Hostname, ()> {
+    std::env::args().nth(1).ok_or(())?.parse().map_err(|_| ())
+}
+
+fn main() {
+    match parse_args() {
+        Ok(x) => start(x),
+        Err(_) => usage(),
+    }
+}
+
+fn start(hn: Hostname) {
+    println!("ip={}, port={}", hn.ip, hn.port)
 }