1 files changed, 33 insertions, 1 deletions
diff --git a/src/encoding/request.rs b/src/encoding/request.rs
index aecd006..c62bab3 100644
--- a/src/encoding/request.rs
+++ b/src/encoding/request.rs
@@ -1,5 +1,6 @@
 use super::{headermap::HeaderMap, method::Method, uri::Uri};
-use std::fmt::Display;
+use anyhow::{anyhow, bail};
+use std::{fmt::Display, str::FromStr};
 
 #[derive(Debug, Clone)]
 pub struct Request {
@@ -20,3 +21,34 @@ impl Display for Request {
         Ok(())
     }
 }
+impl FromStr for Request {
+    type Err = anyhow::Error;
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let mut lines = s.lines();
+        let statusline = lines.next().ok_or(anyhow!("status line missing"))?;
+        let (method, rest) = statusline
+            .split_once(" ")
+            .ok_or(anyhow!("status line malformed"))?;
+        let (uri, sipver) = rest
+            .split_once(" ")
+            .ok_or(anyhow!("status line malformed"))?;
+
+        let Some(ver) = sipver.strip_prefix("SIP/") else {
+            bail!("sip version malformed");
+        };
+        if ver != "2.0" {
+            bail!("sip version {ver:?} is not supported");
+        }
+
+        let uri = Uri::from_str(uri)?;
+
+        let headers = HeaderMap::parse(&mut lines)?;
+        let method = Method::from_str(method)?;
+
+        Ok(Self {
+            headers,
+            method,
+            uri,
+        })
+    }
+}