diff --git a/src/net/mod.rs b/src/net/mod.rs
index 601bc60..a1d2f29 100644
--- a/src/net/mod.rs
+++ b/src/net/mod.rs
@@ -7,7 +7,7 @@ mod result;
 
 pub use result::{Error, Result};
 
-pub use system::Net;
+pub use system::{MatchOn, Net};
 use system::{Mocked, Unmocked};
 
 
diff --git a/src/net/system.rs b/src/net/system.rs
index 7396c89..9cd4872 100644
--- a/src/net/system.rs
+++ b/src/net/system.rs
@@ -1,6 +1,6 @@
+//
 use std::marker::PhantomData;
 
-//
 use super::{Error, Result};
 
 pub trait NetType {}
@@ -12,10 +12,19 @@ impl NetType for Unmocked {}
 
 type Plans = Vec<Plan>;
 
+#[derive(Debug, PartialEq, Eq)]
+pub enum MatchOn {
+    Method,
+    Url,
+    Body,
+    Headers,
+}
+
 #[derive(Debug)]
 pub struct Plan {
     request: reqwest::Request,
     response: reqwest::Response,
+    match_on: Vec<MatchOn>,
 }
 
 pub struct Net<T: NetType> {
@@ -50,15 +59,34 @@ impl Net<Mocked> {
     pub async fn send(&mut self, request: reqwest::RequestBuilder) -> Result<reqwest::Response> {
         let request = request.build()?;
         let index = self.plans.iter().position(|plan| {
-            // TODO: add support or only matching on selected criteria
-            plan.request.method() == request.method()
-                && plan.request.url() == request.url()
-                && match (plan.request.body(), request.body()) {
+            // METHOD
+            (if plan.match_on.contains(&MatchOn::Method) {
+                plan.request.method() == request.method()
+            } else {
+                true
+            })
+            // URL
+            && (if plan.match_on.contains(&MatchOn::Url) {
+                plan.request.url() == request.url()
+            } else {
+                true
+            })
+            // BODY
+            && (if plan.match_on.contains(&MatchOn::Body) {
+                match (plan.request.body(), request.body()) {
                     (None, None) => true,
                     (Some(plan), Some(request)) => plan.as_bytes() == request.as_bytes(),
                     _ => false,
                 }
-                && plan.request.headers() == request.headers()
+            } else {
+                true
+            })
+            // HEADERS
+            && (if plan.match_on.contains(&MatchOn::Headers) {
+                plan.request.headers() == request.headers()
+            } else {
+                true
+            })
         });
         match index {
             Some(i) => Ok(self.plans.remove(i).response),
@@ -70,11 +98,24 @@ impl Net<Mocked> {
     }
 
     pub fn on(&mut self, request: reqwest::Request) -> OnRequest {
-        OnRequest { net: self, request }
+        OnRequest {
+            net: self,
+            request,
+            match_on: vec![MatchOn::Method, MatchOn::Url],
+        }
     }
 
-    fn _on(&mut self, request: reqwest::Request, response: reqwest::Response) {
-        self.plans.push(Plan { request, response })
+    fn _on(
+        &mut self,
+        request: reqwest::Request,
+        response: reqwest::Response,
+        match_on: Vec<MatchOn>,
+    ) {
+        self.plans.push(Plan {
+            request,
+            response,
+            match_on,
+        })
     }
 }
 impl<T: NetType> Drop for Net<T> {
@@ -86,9 +127,13 @@ impl<T: NetType> Drop for Net<T> {
 pub struct OnRequest<'net> {
     net: &'net mut Net<Mocked>,
     request: reqwest::Request,
+    match_on: Vec<MatchOn>,
 }
 impl<'net> OnRequest<'net> {
+    pub fn match_on(self, match_on: Vec<MatchOn>) -> Self {
+        Self{net:self.net, request:self.request, match_on}
+    }
     pub fn respond(self, response: reqwest::Response) {
-        self.net._on(self.request, response)
+        self.net._on(self.request, response, self.match_on)
     }
 }
diff --git a/tests/net.rs b/tests/net.rs
index 426b919..21d67f9 100644
--- a/tests/net.rs
+++ b/tests/net.rs
@@ -1,5 +1,5 @@
 //
-use kxio::net::Error;
+use kxio::net::{Error, MatchOn};
 
 type TestResult = Result<(), Error>;
 
@@ -30,7 +30,7 @@ async fn test_get() -> TestResult {
 }
 
 #[tokio::test]
-async fn test_post() -> TestResult {
+async fn test_post() {
     //given
     let mut net = kxio::net::mock();
     let client = net.client();
@@ -46,13 +46,41 @@ async fn test_post() -> TestResult {
     net.on(request).respond(my_response.into());
 
     //when
-    let response = net.send(client.post(url)).await?;
+    let response = net.send(client.post(url)).await.expect("reponse");
 
     //then
     assert_eq!(response.status(), http::StatusCode::OK);
     assert_eq!(response.bytes().await.expect("response body"), "Post OK");
+}
 
-    Ok(())
+#[tokio::test]
+async fn test_post_by_url() {
+    //given
+    let mut net = kxio::net::mock();
+    let client = net.client();
+
+    let url = "https://www.example.com";
+    let request = client.post(url).build().expect("build request");
+    let my_response = net
+        .response()
+        .status(200)
+        .body("Post OK")
+        .expect("request body");
+
+    net.on(request)
+        .match_on(vec![
+            // MatchOn::Method, 
+            MatchOn::Url
+        ])
+        .respond(my_response.into());
+
+    //when
+    // This request is a GET, not POST - but should still match
+    let response = net.send(client.get(url)).await.expect("response");
+
+    //then
+    assert_eq!(response.status(), http::StatusCode::OK);
+    assert_eq!(response.bytes().await.expect("response body"), "Post OK");
 }
 
 #[tokio::test]