diff --git a/tests/Feature/Protocols/Pusher/Reverb/ChannelControllerTest.php b/tests/Feature/Protocols/Pusher/Reverb/ChannelControllerTest.php
index ca397ec0..ea810525 100644
--- a/tests/Feature/Protocols/Pusher/Reverb/ChannelControllerTest.php
+++ b/tests/Feature/Protocols/Pusher/Reverb/ChannelControllerTest.php
@@ -59,6 +59,15 @@
     expect($response->getBody()->getContents())->toBe('{"occupied":true,"subscription_count":1}');
 });
 
+it('can send the content-length header', function () {
+    subscribe('test-channel-one');
+    subscribe('test-channel-one');
+
+    $response = await($this->signedRequest('channels/test-channel-one?info=user_count,subscription_count,cache'));
+
+    expect($response->getHeader('Content-Length'))->toBe(['40']);
+});
+
 it('can gather data for a single channel', function () {
     $this->usingRedis();
 
@@ -121,3 +130,14 @@
     expect($response->getStatusCode())->toBe(200);
     expect($response->getBody()->getContents())->toBe('{"occupied":true,"subscription_count":1}');
 });
+
+it('can send the content-length header when gathering results', function () {
+    $this->usingRedis();
+
+    subscribe('test-channel-one');
+    subscribe('test-channel-one');
+
+    $response = await($this->signedRequest('channels/test-channel-one?info=user_count,subscription_count,cache'));
+
+    expect($response->getHeader('Content-Length'))->toBe(['40']);
+});
diff --git a/tests/Feature/Protocols/Pusher/Reverb/ChannelUsersControllerTest.php b/tests/Feature/Protocols/Pusher/Reverb/ChannelUsersControllerTest.php
index 7a9d31c9..e8ebcb9a 100644
--- a/tests/Feature/Protocols/Pusher/Reverb/ChannelUsersControllerTest.php
+++ b/tests/Feature/Protocols/Pusher/Reverb/ChannelUsersControllerTest.php
@@ -61,6 +61,19 @@
     await($this->signedRequest('channels/presence-test-channel/users'));
 })->throws(ResponseException::class);
 
+it('can send the content-length header', function () {
+    $channel = app(ChannelManager::class)
+        ->for(app()->make(ApplicationProvider::class)->findByKey('reverb-key'))
+        ->findOrCreate('presence-test-channel');
+    $channel->subscribe($connection = new FakeConnection('test-connection-one'), validAuth($connection->id(), 'presence-test-channel', $data = json_encode(['user_id' => 1, 'user_info' => ['name' => 'Taylor']])), $data);
+    $channel->subscribe($connection = new FakeConnection('test-connection-two'), validAuth($connection->id(), 'presence-test-channel', $data = json_encode(['user_id' => 2, 'user_info' => ['name' => 'Joe']])), $data);
+    $channel->subscribe($connection = new FakeConnection('test-connection-three'), validAuth($connection->id(), 'presence-test-channel', $data = json_encode(['user_id' => 3, 'user_info' => ['name' => 'Jess']])), $data);
+
+    $response = await($this->signedRequest('channels/presence-test-channel/users'));
+
+    expect($response->getHeader('Content-Length'))->toBe(['38']);
+});
+
 it('gathers the user data', function () {
     $this->usingRedis();
 
@@ -92,3 +105,18 @@
     expect($response->getStatusCode())->toBe(200);
     expect($response->getBody()->getContents())->toBe('{"users":[{"id":2},{"id":3}]}');
 });
+
+it('can send the content-length header when gathering results', function () {
+    $this->usingRedis();
+    
+    $channel = app(ChannelManager::class)
+        ->for(app()->make(ApplicationProvider::class)->findByKey('reverb-key'))
+        ->findOrCreate('presence-test-channel');
+    $channel->subscribe($connection = new FakeConnection('test-connection-one'), validAuth($connection->id(), 'presence-test-channel', $data = json_encode(['user_id' => 1, 'user_info' => ['name' => 'Taylor']])), $data);
+    $channel->subscribe($connection = new FakeConnection('test-connection-two'), validAuth($connection->id(), 'presence-test-channel', $data = json_encode(['user_id' => 2, 'user_info' => ['name' => 'Joe']])), $data);
+    $channel->subscribe($connection = new FakeConnection('test-connection-three'), validAuth($connection->id(), 'presence-test-channel', $data = json_encode(['user_id' => 3, 'user_info' => ['name' => 'Jess']])), $data);
+
+    $response = await($this->signedRequest('channels/presence-test-channel/users'));
+
+    expect($response->getHeader('Content-Length'))->toBe(['38']);
+});
diff --git a/tests/Feature/Protocols/Pusher/Reverb/ChannelsControllerTest.php b/tests/Feature/Protocols/Pusher/Reverb/ChannelsControllerTest.php
index 7759d5b1..232115ed 100644
--- a/tests/Feature/Protocols/Pusher/Reverb/ChannelsControllerTest.php
+++ b/tests/Feature/Protocols/Pusher/Reverb/ChannelsControllerTest.php
@@ -51,6 +51,15 @@
     expect($response->getBody()->getContents())->toBe('{"channels":{"test-channel-two":{}}}');
 });
 
+it('can send the content-length header', function () {
+    subscribe('test-channel-one');
+    subscribe('presence-test-channel-two');
+
+    $response = await($this->signedRequest('channels?info=user_count'));
+
+    expect($response->getHeader('Content-Length'))->toBe(['81']);
+});
+
 it('can gather all channel information', function () {
     $this->usingRedis();
 
@@ -102,3 +111,14 @@
     expect($response->getStatusCode())->toBe(200);
     expect($response->getBody()->getContents())->toBe('{"channels":{"test-channel-two":{}}}');
 });
+
+it('can send the content-length header when gathering results', function () {
+    $this->usingRedis();
+    
+    subscribe('test-channel-one');
+    subscribe('presence-test-channel-two');
+
+    $response = await($this->signedRequest('channels?info=user_count'));
+
+    expect($response->getHeader('Content-Length'))->toBe(['81']);
+});
diff --git a/tests/Feature/Protocols/Pusher/Reverb/ConnectionsControllerTest.php b/tests/Feature/Protocols/Pusher/Reverb/ConnectionsControllerTest.php
index 345cfa96..b08afc8a 100644
--- a/tests/Feature/Protocols/Pusher/Reverb/ConnectionsControllerTest.php
+++ b/tests/Feature/Protocols/Pusher/Reverb/ConnectionsControllerTest.php
@@ -27,6 +27,15 @@
     expect($response->getBody()->getContents())->toBe('{"connections":1}');
 });
 
+it('can send the content-length header', function () {
+    subscribe('test-channel-one');
+    subscribe('presence-test-channel-two');
+
+    $response = await($this->signedRequest('connections'));
+
+    expect($response->getHeader('Content-Length'))->toBe(['17']);
+});
+
 it('can gather a connection count', function () {
     $this->usingRedis();
 
@@ -51,3 +60,14 @@
     expect($response->getStatusCode())->toBe(200);
     expect($response->getBody()->getContents())->toBe('{"connections":1}');
 });
+
+it('can send the content-length header when gathering results', function () {
+    $this->usingRedis();
+    
+    subscribe('test-channel-one');
+    subscribe('presence-test-channel-two');
+
+    $response = await($this->signedRequest('connections'));
+
+    expect($response->getHeader('Content-Length'))->toBe(['17']);
+});
\ No newline at end of file
diff --git a/tests/Feature/Protocols/Pusher/Reverb/EventsBatchControllerTest.php b/tests/Feature/Protocols/Pusher/Reverb/EventsBatchControllerTest.php
index 2aadf7dc..efa6c631 100644
--- a/tests/Feature/Protocols/Pusher/Reverb/EventsBatchControllerTest.php
+++ b/tests/Feature/Protocols/Pusher/Reverb/EventsBatchControllerTest.php
@@ -87,6 +87,18 @@
     expect($response->getBody()->getContents())->toBe('{"batch":[{"user_count":1},{}]}');
 });
 
+it('can send the content-length header', function () {
+    $response = await($this->signedPostRequest('batch_events', ['batch' => [
+        [
+            'name' => 'NewEvent',
+            'channel' => 'test-channel',
+            'data' => json_encode(['some' => 'data']),
+        ],
+    ]]));
+
+    expect($response->getHeader('Content-Length'))->toBe(['12']);
+});
+
 it('can receive an event batch trigger with multiple events and gather info for each', function () {
     $this->usingRedis();
 
@@ -145,3 +157,17 @@
 
     expect($response->getStatusCode())->toBe(500);
 })->throws(ResponseException::class, exceptionCode: 500);
+
+it('can send the content-length header when gathering results', function () {
+    $this->usingRedis();
+
+    $response = await($this->signedPostRequest('batch_events', ['batch' => [
+        [
+            'name' => 'NewEvent',
+            'channel' => 'test-channel',
+            'data' => json_encode(['some' => 'data']),
+        ],
+    ]]));
+
+    expect($response->getHeader('Content-Length'))->toBe(['12']);
+});
diff --git a/tests/Feature/Protocols/Pusher/Reverb/EventsControllerTest.php b/tests/Feature/Protocols/Pusher/Reverb/EventsControllerTest.php
index f6df3122..a34487c0 100644
--- a/tests/Feature/Protocols/Pusher/Reverb/EventsControllerTest.php
+++ b/tests/Feature/Protocols/Pusher/Reverb/EventsControllerTest.php
@@ -197,3 +197,13 @@
 it('fails when app cannot be found', function () {
     await($this->signedPostRequest('events', appId: 'invalid-app-id'));
 })->throws(ResponseException::class, exceptionCode: 404);
+
+it('can send the content-length header', function () {
+    $response = await($this->signedPostRequest('events', [
+        'name' => 'NewEvent',
+        'channel' => 'test-channel',
+        'data' => json_encode(['some' => 'data']),
+    ]));
+
+    expect($response->getHeader('Content-Length'))->toBe(['2']);
+});
diff --git a/tests/Feature/Protocols/Pusher/Reverb/UsersTerminateControllerTest.php b/tests/Feature/Protocols/Pusher/Reverb/UsersTerminateControllerTest.php
index 9dd3ec18..99851799 100644
--- a/tests/Feature/Protocols/Pusher/Reverb/UsersTerminateControllerTest.php
+++ b/tests/Feature/Protocols/Pusher/Reverb/UsersTerminateControllerTest.php
@@ -29,6 +29,7 @@
     expect($response->getBody()->getContents())->toBe('{}');
     expect(collect(channels()->all())->get('presence-test-channel-one')->connections())->toHaveCount(1);
     expect(collect(channels()->all())->get('test-channel-two')->connections())->toHaveCount(1);
+    expect($response->getHeader('Content-Length'))->toBe(['2']);
 });
 
 it('unsubscribes from all channels across all servers and terminates a user', function () {
@@ -51,4 +52,5 @@
     expect($response->getBody()->getContents())->toBe('{}');
     expect(collect(channels()->all())->get('presence-test-channel-one')->connections())->toHaveCount(1);
     expect(collect(channels()->all())->get('test-channel-two')->connections())->toHaveCount(1);
+    expect($response->getHeader('Content-Length'))->toBe(['2']);
 });