Session::new() now returns Result rather than Option

Refs: https://github.com/alexcrichton/ssh2-rs/issues/96

This is a breaking change, so bump the package version

2 files changed, 4 insertions, 4 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 8745af2..5f93fcc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ssh2"
-version = "0.3.3"
+version = "0.4.0"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 license = "MIT/Apache-2.0"
 keywords = ["ssh"]
diff --git a/src/session.rs b/src/session.rs
index 71af745..10a0703 100644
--- a/src/session.rs
+++ b/src/session.rs
@@ -36,14 +36,14 @@ impl Session {
     /// mode, compression, sigpipe, the banner, etc. To associate this session
     /// with a TCP connection, use the `handshake` method to pass in an
     /// already-established TCP socket.
-    pub fn new() -> Option<Session> {
+    pub fn new() -> Result<Session, Error> {
         ::init();
         unsafe {
             let ret = raw::libssh2_session_init_ex(None, None, None, 0 as *mut _);
             if ret.is_null() {
-                None
+                Err(Error::unknown())
             } else {
-                Some(Binding::from_raw(ret))
+                Ok(Binding::from_raw(ret))
             }
         }
     }