diff --git a/rsocket-core/src/main/java/io/rsocket/RSocketClient.java b/rsocket-core/src/main/java/io/rsocket/RSocketClient.java
index 90d0778c5..7149ed441 100644
--- a/rsocket-core/src/main/java/io/rsocket/RSocketClient.java
+++ b/rsocket-core/src/main/java/io/rsocket/RSocketClient.java
@@ -252,25 +252,19 @@ public Flux<Payload> handleRequestStream(final Payload payload) {
                               Frame.Request.from(streamId, FrameType.REQUEST_STREAM, payload, l);
 
                           sendProcessor.onNext(requestFrame);
-                        } else if (contains(streamId)
-                            && connection.availability() > 0.0
-                            && !receiver.isTerminated()) {
+                        } else if (contains(streamId) && !receiver.isTerminated()) {
                           sendProcessor.onNext(Frame.RequestN.from(streamId, l));
                         }
                       })
                   .doOnError(
                       t -> {
-                        if (contains(streamId)
-                            && connection.availability() > 0.0
-                            && !receiver.isTerminated()) {
+                        if (contains(streamId) && !receiver.isTerminated()) {
                           sendProcessor.onNext(Frame.Error.from(streamId, t));
                         }
                       })
                   .doOnCancel(
                       () -> {
-                        if (contains(streamId)
-                            && connection.availability() > 0.0
-                            && !receiver.isTerminated()) {
+                        if (contains(streamId) && !receiver.isTerminated()) {
                           sendProcessor.onNext(Frame.Cancel.from(streamId));
                         }
                       })
@@ -311,9 +305,7 @@ private Flux<Payload> handleStreamResponse(Flux<Payload> request, FrameType requ
               boolean firstRequest = true;
 
               boolean isValidToSendFrame() {
-                return contains(streamId)
-                    && connection.availability() > 0.0
-                    && !receiver.isTerminated();
+                return contains(streamId) && !receiver.isTerminated();
               }
 
               void sendOneFrame(Frame frame) {
diff --git a/rsocket-core/src/main/java/io/rsocket/RSocketServer.java b/rsocket-core/src/main/java/io/rsocket/RSocketServer.java
index d6138aace..2774ca43a 100644
--- a/rsocket-core/src/main/java/io/rsocket/RSocketServer.java
+++ b/rsocket-core/src/main/java/io/rsocket/RSocketServer.java
@@ -330,21 +330,15 @@ private Mono<Void> handleChannel(int streamId, Frame firstFrame) {
         frames
             .doOnCancel(
                 () -> {
-                  if (connection.availability() > 0.0) {
-                    sendProcessor.onNext(Frame.Cancel.from(streamId));
-                  }
+                  sendProcessor.onNext(Frame.Cancel.from(streamId));
                 })
             .doOnError(
                 t -> {
-                  if (connection.availability() > 0.0) {
-                    sendProcessor.onNext(Frame.Error.from(streamId, t));
-                  }
+                  sendProcessor.onNext(Frame.Error.from(streamId, t));
                 })
             .doOnRequest(
                 l -> {
-                  if (connection.availability() > 0.0) {
-                    sendProcessor.onNext(Frame.RequestN.from(streamId, l));
-                  }
+                  sendProcessor.onNext(Frame.RequestN.from(streamId, l));
                 })
             .doFinally(signalType -> removeChannelProcessor(streamId));
 
diff --git a/rsocket-core/src/test/java/io/rsocket/AbstractSocketRule.java b/rsocket-core/src/test/java/io/rsocket/AbstractSocketRule.java
index ecd0f1e64..14c252cb0 100644
--- a/rsocket-core/src/test/java/io/rsocket/AbstractSocketRule.java
+++ b/rsocket-core/src/test/java/io/rsocket/AbstractSocketRule.java
@@ -19,6 +19,7 @@
 import io.rsocket.test.util.TestDuplexConnection;
 import io.rsocket.test.util.TestSubscriber;
 import java.util.concurrent.ConcurrentLinkedQueue;
+import org.junit.Assert;
 import org.junit.rules.ExternalResource;
 import org.junit.runner.Description;
 import org.junit.runners.model.Statement;
@@ -50,4 +51,10 @@ protected void init() {
   }
 
   protected abstract T newRSocket();
+
+  public void assertNoConnectionErrors() {
+    if (errors.size() > 1) {
+      Assert.fail("No connection errors expected: " + errors.peek().toString());
+    }
+  }
 }
diff --git a/rsocket-core/src/test/java/io/rsocket/RSocketClientTest.java b/rsocket-core/src/test/java/io/rsocket/RSocketClientTest.java
index d5d824ef5..7ad6e4f10 100644
--- a/rsocket-core/src/test/java/io/rsocket/RSocketClientTest.java
+++ b/rsocket-core/src/test/java/io/rsocket/RSocketClientTest.java
@@ -38,7 +38,6 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
-import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.reactivestreams.Publisher;
@@ -158,17 +157,21 @@ public void testRequestReplyWithCancel() {
   }
 
   @Test(timeout = 2_000)
-  @Ignore
   public void testRequestReplyErrorOnSend() {
     rule.connection.setAvailability(0); // Fails send
     Mono<Payload> response = rule.socket.requestResponse(PayloadImpl.EMPTY);
-    Subscriber<Payload> responseSub = TestSubscriber.create();
+    Subscriber<Payload> responseSub = TestSubscriber.create(10);
     response.subscribe(responseSub);
 
-    verify(responseSub).onError(any(RuntimeException.class));
+    this.rule.assertNoConnectionErrors();
+
+    verify(responseSub).onSubscribe(any(Subscription.class));
+
+    // TODO this should get the error reported through the response subscription
+    //    verify(responseSub).onError(any(RuntimeException.class));
   }
 
-  @Test
+  @Test(timeout = 2_000)
   public void testLazyRequestResponse() {
     Publisher<Payload> response = rule.socket.requestResponse(PayloadImpl.EMPTY);
     int streamId = sendRequestResponse(response);
diff --git a/rsocket-core/src/test/java/io/rsocket/RSocketTest.java b/rsocket-core/src/test/java/io/rsocket/RSocketTest.java
index 021f75829..00974154a 100644
--- a/rsocket-core/src/test/java/io/rsocket/RSocketTest.java
+++ b/rsocket-core/src/test/java/io/rsocket/RSocketTest.java
@@ -28,7 +28,7 @@
 import java.util.ArrayList;
 import java.util.concurrent.CountDownLatch;
 import org.hamcrest.MatcherAssert;
-import org.junit.Ignore;
+import org.junit.Assert;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExternalResource;
@@ -54,7 +54,6 @@ public void testRequestReplyNoError() {
   }
 
   @Test(timeout = 2000)
-  @Ignore
   public void testHandlerEmitsError() {
     rule.setRequestAcceptor(
         new AbstractRSocket() {
@@ -66,7 +65,11 @@ public Mono<Payload> requestResponse(Payload payload) {
     Subscriber<Payload> subscriber = TestSubscriber.create();
     rule.crs.requestResponse(PayloadImpl.EMPTY).subscribe(subscriber);
     verify(subscriber).onError(any(ApplicationException.class));
-    rule.assertNoErrors();
+
+    // Client sees error through normal API
+    rule.assertNoClientErrors();
+
+    rule.assertServerError("java.lang.NullPointerException: Deliberate exception.");
   }
 
   @Test(timeout = 2000)
@@ -149,10 +152,36 @@ public void setRequestAcceptor(RSocket requestAcceptor) {
     }
 
     public void assertNoErrors() {
+      assertNoClientErrors();
+      assertNoServerErrors();
+    }
+
+    public void assertNoClientErrors() {
       MatcherAssert.assertThat(
           "Unexpected error on the client connection.", clientErrors, is(empty()));
+    }
+
+    public void assertNoServerErrors() {
       MatcherAssert.assertThat(
           "Unexpected error on the server connection.", serverErrors, is(empty()));
     }
+
+    public void assertClientError(String s) {
+      assertError(s, "client", this.clientErrors);
+    }
+
+    public void assertServerError(String s) {
+      assertError(s, "server", this.serverErrors);
+    }
+  }
+
+  public static void assertError(String s, String mode, ArrayList<Throwable> errors) {
+    for (Throwable t : errors) {
+      if (t.toString().equals(s)) {
+        return;
+      }
+    }
+
+    Assert.fail("Expected " + mode + " connection error: " + s + " other errors " + errors.size());
   }
 }