Merge pull request #23 from reactive-streams/Silv3rcircl3-patch-1

Author: Marc Piechura

README.md

@@ -82,7 +82,7 @@ public interface IPublisher<out T> {
 | <a name="1.6">6</a>       | If a `Publisher` signals either `onError` or `onComplete` on a `Subscriber`, that `Subscriber`’s `Subscription` MUST be considered cancelled. |
 | <a name="1.7">7</a>       | Once a terminal state has been signaled (`onError`, `onComplete`) it is REQUIRED that no further signals occur. |
 | <a name="1.8">8</a>       | If a `Subscription` is cancelled its `Subscriber` MUST eventually stop being signaled. |
-| <a name="1.9">9</a>       | `Publisher.Subscribe` MUST call `OnSubscribe` on the provided `Subscriber` prior to any other signals to that `Subscriber` and MUST return normally, except when the provided `Subscriber` is `null` in which case it MUST throw a `System.NullReferenceException` to the caller, for all other situations [[1]](#footnote-1-1) the only legal way to signal failure (or reject the `Subscriber`) is by calling `OnError` (after calling `OnSubscribe`). |
+| <a name="1.9">9</a>       | `Publisher.Subscribe` MUST call `OnSubscribe` on the provided `Subscriber` prior to any other signals to that `Subscriber` and MUST return normally, except when the provided `Subscriber` is `null` in which case it MUST throw a `System.ArgumentNullException` to the caller, for all other situations [[1]](#footnote-1-1) the only legal way to signal failure (or reject the `Subscriber`) is by calling `OnError` (after calling `OnSubscribe`). |
 | <a name="1.10">10</a>     | `Publisher.Subscribe` MAY be called as many times as wanted but MUST be with a different `Subscriber` each time [see [2.12](#2.12)]. |
 | <a name="1.11">11</a>     | A `Publisher` MAY support multiple `Subscriber`s and decides whether each `Subscription` is unicast or multicast. |
 
@@ -113,7 +113,7 @@ public interface ISubscriber<in T> {
 | <a name="2.10">10</a>     | A `Subscriber` MUST be prepared to receive an `onError` signal with or without a preceding `Subscription.Request(long n)` call. |
 | <a name="2.11">11</a>     | A `Subscriber` MUST make sure that all calls on its `OnXXX` methods happen-before [[1]](#footnote-2-1) the processing of the respective signals. I.e. the Subscriber must take care of properly publishing the signal to its processing logic. |
 | <a name="2.12">12</a>     | `Subscriber.OnSubscribe` MUST be called at most once for a given `Subscriber` (based on object equality). |
-| <a name="2.13">13</a>     | Calling `OnSubscribe`, `OnNext`, `OnError` or `OnComplete` MUST return normally except when any provided parameter is `null` in which case it MUST throw a `System.NullReferenceException` to the caller, for all other situations the only legal way for a `Subscriber` to signal failure is by cancelling its `Subscription`. In the case that this rule is violated, any associated `Subscription` to the `Subscriber` MUST be considered as cancelled, and the caller MUST raise this error condition in a fashion that is adequate for the runtime environment. |
+| <a name="2.13">13</a>     | Calling `OnSubscribe`, `OnNext`, `OnError` or `OnComplete` MUST return normally except when any provided parameter is `null` in which case it MUST throw a `System.ArgumentNullException` to the caller, for all other situations the only legal way for a `Subscriber` to signal failure is by cancelling its `Subscription`. In the case that this rule is violated, any associated `Subscription` to the `Subscriber` MUST be considered as cancelled, and the caller MUST raise this error condition in a fashion that is adequate for the runtime environment. |
 
 [<a name="footnote-2-1">1</a>] : See JMM definition of Happen-Before in section 17.4.5. on http://docs.oracle.com/javase/specs/jls/se7/html/jls-17.html