diff --git a/Cargo.lock b/Cargo.lock
index a25ba70..04171bb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,20 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+[[package]]
+name = "addr2line"
+version = "0.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "602d785912f476e480434627e8732e6766b760c045bbf897d9dfaa9f4fbd399c"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler32"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "567b077b825e468cc974f0020d4082ee6e03132512f207ef1a02fd5d00d1f32d"
+
 [[package]]
 name = "ahash"
 version = "0.3.5"
@@ -46,6 +61,7 @@ dependencies = [
  "anyhow",
  "aquatic_cli_helpers",
  "aquatic_common",
+ "bendy",
  "either",
  "flume",
  "hashbrown",
@@ -219,12 +235,37 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
 
+[[package]]
+name = "backtrace"
+version = "0.3.49"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05100821de9e028f12ae3d189176b41ee198341eb8f369956407fea2f5cc666c"
+dependencies = [
+ "addr2line",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+]
+
 [[package]]
 name = "base64"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b41b7ea54a0c9d92199de89e20e58d49f02f8e699814ef3fdf266f6f748d15c7"
 
+[[package]]
+name = "bendy"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f35e865a4aae9618063f67b1cd1ff6d0ae28b9478f1cdc0dd88d61884c8fe71"
+dependencies = [
+ "failure",
+ "serde",
+ "serde_bytes",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.2.1"
@@ -402,6 +443,28 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "failure"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d32e9bd16cc02eae7db7ef620b392808b89f6a5e16bb3497d159c6b92a0f4f86"
+dependencies = [
+ "backtrace",
+ "failure_derive",
+]
+
+[[package]]
+name = "failure_derive"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa4da3c766cd7a0db8242e326e9e4e081edd567072893ed320008189715366a4"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "fake-simd"
 version = "0.1.2"
@@ -520,6 +583,12 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "gimli"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bcc8e0c9bce37868955864dbecd2b1ab2bdf967e6f28066d65aaac620444b65c"
+
 [[package]]
 name = "gumdrop"
 version = "0.7.0"
@@ -693,6 +762,15 @@ dependencies = [
  "libmimalloc-sys",
 ]
 
+[[package]]
+name = "miniz_oxide"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "791daaae1ed6889560f8c4359194f56648355540573244a5448a83ba1ecc7435"
+dependencies = [
+ "adler32",
+]
+
 [[package]]
 name = "mio"
 version = "0.7.0"
@@ -866,6 +944,12 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "17b02fc0ff9a9e4b35b3342880f48e896ebf69f2967921fe8646bf5b7125956a"
 
+[[package]]
+name = "object"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ab52be62400ca80aa00285d25253d7f7c437b7375c4de678f5405d3afe82ca5"
+
 [[package]]
 name = "opaque-debug"
 version = "0.2.3"
@@ -1140,6 +1224,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "rustc-demangle"
+version = "0.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
+
 [[package]]
 name = "ryu"
 version = "1.0.4"
@@ -1194,6 +1284,15 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde_bytes"
+version = "0.11.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16ae07dd2f88a366f15bd0632ba725227018c69a1c8550a927324f8eb8368bb9"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "serde_derive"
 version = "1.0.110"
@@ -1286,6 +1385,18 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "synstructure"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b834f2d66f734cb897113e34aaff2f1ab4719ca946f9a7358dba8f8064148701"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "unicode-xid",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.1.0"
diff --git a/TODO.md b/TODO.md
index f286c52..fa27a93 100644
--- a/TODO.md
+++ b/TODO.md
@@ -9,9 +9,8 @@
 * handshake stuff
   * fix overcomplicated and probably incorrect implementation
   * support TLS and plain at the same time??
-* response serialization, https://crates.io/crates/bendy
-* response content length
-* scrape info hash parsing
+  * really close connections after sending response??
+* scrape info hash parsing: multiple ought to be accepted
 * move stuff to common crate with ws: what about Request/InMessage etc?
 
 ## aquatic_ws
diff --git a/aquatic_http/Cargo.toml b/aquatic_http/Cargo.toml
index 5c57b97..c8f2e13 100644
--- a/aquatic_http/Cargo.toml
+++ b/aquatic_http/Cargo.toml
@@ -17,6 +17,7 @@ path = "src/bin/main.rs"
 anyhow = "1"
 aquatic_cli_helpers = { path = "../aquatic_cli_helpers" }
 aquatic_common = { path = "../aquatic_common" }
+bendy = { version = "0.3", features = ["std", "serde"] }
 either = "1"
 flume = "0.7"
 hashbrown = { version = "0.7", features = ["serde"] }
diff --git a/aquatic_http/src/lib/network/connection.rs b/aquatic_http/src/lib/network/connection.rs
index 2b7e902..852044f 100644
--- a/aquatic_http/src/lib/network/connection.rs
+++ b/aquatic_http/src/lib/network/connection.rs
@@ -160,14 +160,17 @@ impl EstablishedConnection {
         request
     }
 
-    pub fn send_response(&mut self, body: &str) -> ::std::io::Result<()> {
-        let mut response = String::new();
+    pub fn send_response(&mut self, body: &[u8]) -> ::std::io::Result<()> {
+        let mut response = Vec::new();
 
-        response.push_str("HTTP/1.1 200 OK\r\n\r\n"); // FIXME: content-length
-        response.push_str(body);
-        response.push_str("\r\n");
+        response.extend_from_slice(b"HTTP/1.1 200 OK\r\n");
+        response.extend_from_slice(b"Content-Length: ");
+        response.extend_from_slice(format!("{}", body.len() + 2).as_bytes());
+        response.extend_from_slice(b"\r\n\r\n");
+        response.extend_from_slice(body);
+        response.extend_from_slice(b"\r\n");
 
-        self.stream.write(response.as_bytes())?;
+        self.stream.write(&response)?;
         self.stream.flush()?;
 
         Ok(())
diff --git a/aquatic_http/src/lib/network/mod.rs b/aquatic_http/src/lib/network/mod.rs
index 2de3745..0c54503 100644
--- a/aquatic_http/src/lib/network/mod.rs
+++ b/aquatic_http/src/lib/network/mod.rs
@@ -249,7 +249,7 @@ pub fn send_responses(
                 continue;
             }
 
-            match established.send_response(&response.to_http_string()){
+            match established.send_response(&response.to_bytes()){
                 Ok(()) => {
                     debug!("sent response");
 
diff --git a/aquatic_http/src/lib/protocol/mod.rs b/aquatic_http/src/lib/protocol/mod.rs
index 59f73ba..20ca46b 100644
--- a/aquatic_http/src/lib/protocol/mod.rs
+++ b/aquatic_http/src/lib/protocol/mod.rs
@@ -169,7 +169,7 @@ pub enum Response {
 
 
 impl Response {
-    pub fn to_http_string(self) -> String {
-        "(response)".to_string()
+    pub fn to_bytes(self) -> Vec<u8> {
+        bendy::serde::to_bytes(&self).unwrap()
     }
 }
\ No newline at end of file