Bug#861872: Tomcat fails to serve png images

[Support]

>What Connector protocol do you use? 

The default of protocol="HTTP/1.1". The APR libraries are available and the startup logs say Starting ProtocolHandler ["http-apr-8080"].
Interestingly if I change the config to explicitly set protocol="org.apache.coyote.http11.Http11Protocol" or  protocol="org.apache.coyote.http11.Http11NioProtocol" or protocol="org.apache.coyote.http11.Http11AprProtocol" the bug doesn’t appear.

May 05, 2017 3:51:32 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-apr-8080"]
May 05, 2017 3:51:32 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8082"]
May 05, 2017 3:51:32 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-nio-8083"]
May 05, 2017 3:51:32 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-apr-8084"]
May 05, 2017 3:51:32 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in
^C
#  wget http://localhost:8080/path/to/image.png
--2017-05-05 15:51:53--  http://localhost:8080/path/to/image.png
Resolving localhost (localhost)... 127.0.0.1
Connecting to localhost (localhost)|127.0.0.1|:8080... connected.
HTTP request sent, awaiting response... 200 OK
Length: 249343 (243K) [image/png]
Saving to: `image.png.1'

91% [==>              ] 229,376     --.-K/s  eta 1s      ^C
#  wget http://localhost:8084/path/to/image.png
--2017-05-05 15:52:10--  http://localhost:8084/path/to/image.png
Resolving localhost (localhost)... 127.0.0.1
Connecting to localhost (localhost)|127.0.0.1|:8084... connected.
HTTP request sent, awaiting response... 200 OK
Length: 249343 (243K) [image/png]
Saving to: `image.png.2'

100%[=======>] 249,343     --.-K/s   in 0.001s

2017-05-05 15:52:10 (164 MB/s) - `image.png.2' saved [249343/249343]

#  wget http://localhost:8083/path/to/image.png
--2017-05-05 15:52:18--  http://localhost:8083/path/to/image.png
Resolving localhost (localhost)... 127.0.0.1
Connecting to localhost (localhost)|127.0.0.1|:8083... connected.
HTTP request sent, awaiting response... 200 OK
Length: 249343 (243K) [image/png]
Saving to: `image.png.3'

100%[=======>] 249,343     --.-K/s   in 0.005s

2017-05-05 15:52:18 (46.7 MB/s) - `image.png.3' saved [249343/249343]

#  wget http://localhost:8082/path/to/image.png
--2017-05-05 15:52:26--  http://localhost:8082/path/to/image.png
Resolving localhost (localhost)... 127.0.0.1
Connecting to localhost (localhost)|127.0.0.1|:8082... connected.
HTTP request sent, awaiting response... 200 OK
Length: 249343 (243K) [image/png]
Saving to: `image.png.4'

100%[=======>] 249,343     --.-K/s   in 0.001s

2017-05-05 15:52:26 (214 MB/s) - `image.png.4' saved [249343/249343]




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