diff --git a/src/http/handler.rs b/src/http/handler.rs
index 3c33647..d76aaf8 100644
--- a/src/http/handler.rs
+++ b/src/http/handler.rs
@@ -53,8 +53,29 @@ fn request_handler(client: &mut super::HttpStream) {
             [endpoint] => match usimp::is_valid_endpoint(endpoint) {
                 true => match req.method {
                     Method::POST => {
-                        // TODO
-                        res.status(200)
+                        let mut buf = [0; 8192];
+
+                        let length = req.find_header("Content-Length");
+                        let length: usize = length.unwrap().parse().unwrap();
+
+                        client.stream.read_exact(&mut buf[..length]);
+
+                        // TODO decompress
+                        let input =
+                            json::parse(std::str::from_utf8(&buf[..length]).unwrap()).unwrap();
+                        let output = usimp::endpoint(endpoint, input);
+
+                        // TODO compress
+                        let buf = output.to_string() + "\n";
+                        let length = buf.as_bytes().len();
+                        res.add_header("Content-Length", length.to_string().as_str());
+                        res.add_header("Content-Type", "application/json; charset=utf-8");
+
+                        res.status(200);
+                        res.send(&mut client.stream);
+                        client.stream.write_all(buf.as_bytes());
+
+                        return;
                     }
                     _ => {
                         res.status(405);
diff --git a/src/http/mod.rs b/src/http/mod.rs
index f81a18f..acdf06b 100644
--- a/src/http/mod.rs
+++ b/src/http/mod.rs
@@ -160,6 +160,21 @@ pub struct Response {
     header_fields: Vec<HeaderField>,
 }
 
+impl Request {
+    pub fn find_header(&self, header_name: &str) -> Option<String> {
+        for field in &self.header_fields {
+            if field
+                .name
+                .to_lowercase()
+                .eq(header_name.to_ascii_lowercase().as_str())
+            {
+                return Some(field.value.clone());
+            }
+        }
+        return None;
+    }
+}
+
 impl Response {
     pub fn new() -> Response {
         Response {
diff --git a/src/usimp/mod.rs b/src/usimp/mod.rs
index 72dc0e5..7cbc2f0 100644
--- a/src/usimp/mod.rs
+++ b/src/usimp/mod.rs
@@ -1,7 +1,25 @@
 use json;
 
+static ENDPOINTS: [(&str, fn(json::JsonValue) -> json::JsonValue); 1] = [("echo", echo)];
+
 pub fn is_valid_endpoint(endpoint: &str) -> bool {
+    for (name, _func) in &ENDPOINTS {
+        if endpoint.eq(*name) {
+            return true;
+        }
+    }
     false
 }
 
-pub fn endpoint(endpoint: &str, input: json::object::Object) {}
+pub fn endpoint(endpoint: &str, input: json::JsonValue) -> json::JsonValue {
+    for (name, func) in &ENDPOINTS {
+        if endpoint.eq(*name) {
+            return func(input);
+        }
+    }
+    panic!("invalid endpoint, check with is_valid_endpoint")
+}
+
+pub fn echo(input: json::JsonValue) -> json::JsonValue {
+    input
+}
diff --git a/src/websocket/mod.rs b/src/websocket/mod.rs
index 7a56c89..0fd0172 100644
--- a/src/websocket/mod.rs
+++ b/src/websocket/mod.rs
@@ -5,7 +5,6 @@ pub fn connection_handler(client: &mut http::HttpStream, req: &http::Request) {
     let mut res = http::Response::new();
 
     if let http::Method::GET = req.method {
-        res.status(501);
     } else {
         res.status(405);
         res.add_header("Allow", "GET");
@@ -13,5 +12,7 @@ pub fn connection_handler(client: &mut http::HttpStream, req: &http::Request) {
         return;
     }
 
+    // TODO implement websocket
+    res.status(501);
     res.send(&mut client.stream);
 }