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+Pausing
+=======
+
+### on_message_begin
+
+<!-- meta={"type": "response", "pause": "on_message_begin"} -->
+```http
+HTTP/1.1 200 OK
+Content-Length: 3
+
+abc
+```
+
+```log
+off=0 message begin
+off=0 pause
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=14 span[header_field]="Content-Length"
+off=32 header_field complete
+off=33 len=1 span[header_value]="3"
+off=36 header_value complete
+off=38 headers complete status=200 v=1/1 flags=20 content_length=3
+off=38 len=3 span[body]="abc"
+off=41 message complete
+```
+
+### on_message_complete
+
+<!-- meta={"type": "response", "pause": "on_message_complete"} -->
+```http
+HTTP/1.1 200 OK
+Content-Length: 3
+
+abc
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=14 span[header_field]="Content-Length"
+off=32 header_field complete
+off=33 len=1 span[header_value]="3"
+off=36 header_value complete
+off=38 headers complete status=200 v=1/1 flags=20 content_length=3
+off=38 len=3 span[body]="abc"
+off=41 message complete
+off=41 pause
+```
+
+### on_version_complete
+
+<!-- meta={"type": "response", "pause": "on_version_complete"} -->
+```http
+HTTP/1.1 200 OK
+Content-Length: 3
+
+abc
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=8 pause
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=14 span[header_field]="Content-Length"
+off=32 header_field complete
+off=33 len=1 span[header_value]="3"
+off=36 header_value complete
+off=38 headers complete status=200 v=1/1 flags=20 content_length=3
+off=38 len=3 span[body]="abc"
+off=41 message complete
+```
+
+### on_status_complete
+
+<!-- meta={"type": "response", "pause": "on_status_complete"} -->
+```http
+HTTP/1.1 200 OK
+Content-Length: 3
+
+abc
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 pause
+off=17 len=14 span[header_field]="Content-Length"
+off=32 header_field complete
+off=33 len=1 span[header_value]="3"
+off=36 header_value complete
+off=38 headers complete status=200 v=1/1 flags=20 content_length=3
+off=38 len=3 span[body]="abc"
+off=41 message complete
+```
+
+### on_header_field_complete
+
+<!-- meta={"type": "response", "pause": "on_header_field_complete"} -->
+```http
+HTTP/1.1 200 OK
+Content-Length: 3
+
+abc
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=14 span[header_field]="Content-Length"
+off=32 header_field complete
+off=32 pause
+off=33 len=1 span[header_value]="3"
+off=36 header_value complete
+off=38 headers complete status=200 v=1/1 flags=20 content_length=3
+off=38 len=3 span[body]="abc"
+off=41 message complete
+```
+
+### on_header_value_complete
+
+<!-- meta={"type": "response", "pause": "on_header_value_complete"} -->
+```http
+HTTP/1.1 200 OK
+Content-Length: 3
+
+abc
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=14 span[header_field]="Content-Length"
+off=32 header_field complete
+off=33 len=1 span[header_value]="3"
+off=36 header_value complete
+off=36 pause
+off=38 headers complete status=200 v=1/1 flags=20 content_length=3
+off=38 len=3 span[body]="abc"
+off=41 message complete
+```
+
+### on_headers_complete
+
+<!-- meta={"type": "response", "pause": "on_headers_complete"} -->
+```http
+HTTP/1.1 200 OK
+Content-Length: 3
+
+abc
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=14 span[header_field]="Content-Length"
+off=32 header_field complete
+off=33 len=1 span[header_value]="3"
+off=36 header_value complete
+off=38 headers complete status=200 v=1/1 flags=20 content_length=3
+off=38 pause
+off=38 len=3 span[body]="abc"
+off=41 message complete
+```
+
+### on_chunk_header
+
+<!-- meta={"type": "response", "pause": "on_chunk_header"} -->
+```http
+HTTP/1.1 200 OK
+Transfer-Encoding: chunked
+
+a
+0123456789
+0
+
+
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=17 span[header_field]="Transfer-Encoding"
+off=35 header_field complete
+off=36 len=7 span[header_value]="chunked"
+off=45 header_value complete
+off=47 headers complete status=200 v=1/1 flags=208 content_length=0
+off=50 chunk header len=10
+off=50 pause
+off=50 len=10 span[body]="0123456789"
+off=62 chunk complete
+off=65 chunk header len=0
+off=65 pause
+off=67 chunk complete
+off=67 message complete
+```
+
+### on_chunk_extension_name
+
+<!-- meta={"type": "response", "pause": "on_chunk_extension_name"} -->
+```http
+HTTP/1.1 200 OK
+Transfer-Encoding: chunked
+
+a;foo=bar
+0123456789
+0
+
+
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=17 span[header_field]="Transfer-Encoding"
+off=35 header_field complete
+off=36 len=7 span[header_value]="chunked"
+off=45 header_value complete
+off=47 headers complete status=200 v=1/1 flags=208 content_length=0
+off=49 len=3 span[chunk_extension_name]="foo"
+off=53 chunk_extension_name complete
+off=53 pause
+off=53 len=3 span[chunk_extension_value]="bar"
+off=57 chunk_extension_value complete
+off=58 chunk header len=10
+off=58 len=10 span[body]="0123456789"
+off=70 chunk complete
+off=73 chunk header len=0
+off=75 chunk complete
+off=75 message complete
+```
+
+### on_chunk_extension_value
+
+<!-- meta={"type": "response", "pause": "on_chunk_extension_value"} -->
+```http
+HTTP/1.1 200 OK
+Transfer-Encoding: chunked
+
+a;foo=bar
+0123456789
+0
+
+
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=17 span[header_field]="Transfer-Encoding"
+off=35 header_field complete
+off=36 len=7 span[header_value]="chunked"
+off=45 header_value complete
+off=47 headers complete status=200 v=1/1 flags=208 content_length=0
+off=49 len=3 span[chunk_extension_name]="foo"
+off=53 chunk_extension_name complete
+off=53 len=3 span[chunk_extension_value]="bar"
+off=57 chunk_extension_value complete
+off=57 pause
+off=58 chunk header len=10
+off=58 len=10 span[body]="0123456789"
+off=70 chunk complete
+off=73 chunk header len=0
+off=75 chunk complete
+off=75 message complete
+```
+
+### on_chunk_complete
+
+<!-- meta={"type": "response", "pause": "on_chunk_complete"} -->
+```http
+HTTP/1.1 200 OK
+Transfer-Encoding: chunked
+
+a
+0123456789
+0
+
+
+```
+
+```log
+off=0 message begin
+off=5 len=3 span[version]="1.1"
+off=8 version complete
+off=13 len=2 span[status]="OK"
+off=17 status complete
+off=17 len=17 span[header_field]="Transfer-Encoding"
+off=35 header_field complete
+off=36 len=7 span[header_value]="chunked"
+off=45 header_value complete
+off=47 headers complete status=200 v=1/1 flags=208 content_length=0
+off=50 chunk header len=10
+off=50 len=10 span[body]="0123456789"
+off=62 chunk complete
+off=62 pause
+off=65 chunk header len=0
+off=67 chunk complete
+off=67 pause
+off=67 message complete
+```