Bash 如何连接到docker容器中运行的netcat?
我正在寻找发送请求和执行场景的小型rest服务器 我在这里找到了: 我正在尝试执行这个小型rest服务器 下面是Dockerfile和bash脚本 DockerfileBash 如何连接到docker容器中运行的netcat?,bash,rest,docker,debian,netcat,Bash,Rest,Docker,Debian,Netcat,我正在寻找发送请求和执行场景的小型rest服务器 我在这里找到了: 我正在尝试执行这个小型rest服务器 下面是Dockerfile和bash脚本 Dockerfile FROM debian ADD ./rest.sh /rest.sh RUN apt-get update \ && DEBIAN_FRONTEND=noninteractive \ && apt-get install -y net-tools netcat curl \ &am
FROM debian
ADD ./rest.sh /rest.sh
RUN apt-get update \
&& DEBIAN_FRONTEND=noninteractive \
&& apt-get install -y net-tools netcat curl \
&& apt-get clean \
&& rm -rf /var/lib/apt/lists/* \
&& chmod +x /rest.sh
EXPOSE 80
CMD /rest.sh
rest.sh
#!/bin/bash
/bin/rm -f out
/usr/bin/mkfifo out
trap "rm -f out" EXIT
while true
do
/bin/cat out | /bin/nc -l 80 > >( # parse the netcat output, to build the answer redirected to the pipe "out".
export REQUEST=
while read line
do
line=$(echo "$line" | tr -d '[\r\n]')
if /bin/echo "$line" | grep -qE '^GET /' # if line starts with "GET /"
then
REQUEST=$(echo "$line" | cut -d ' ' -f2) # extract the request
elif [ "x$line" = x ] # empty line / end of request
then
HTTP_200="HTTP/1.1 200 OK"
HTTP_LOCATION="Location:"
HTTP_404="HTTP/1.1 404 Not Found"
# call a script here
# Note: REQUEST is exported, so the script can parse it (to answer 200/403/404 status code + content)
if echo $REQUEST | grep -qE '^/echo/'
then
printf "%s\n%s %s\n\n%s\n" "$HTTP_200" "$HTTP_LOCATION" $REQUEST ${REQUEST#"/echo/"} > out
elif echo $REQUEST | grep -qE '^/date'
then
date > out
elif echo $REQUEST | grep -qE '^/stats'
then
vmstat -S M > out
elif echo $REQUEST | grep -qE '^/net'
then
ifconfig > out
else
printf "%s\n%s %s\n\n%s\n" "$HTTP_404" "$HTTP_LOCATION" $REQUEST "Resource $REQUEST NOT FOUND!" > out
fi
fi
done
)
done
docker build-t ncimange.
docker run-d-i-p80:80——名称ncrest ncimange
docker容器ls
IMAGE COMMAND CREATED STATUS PORTS NAMES
ncimange "/bin/sh -c /rest.sh" 8 seconds ago Up 2 seconds 0.0.0.0:80->80/tcp ncrest
docker ps
IMAGE COMMAND CREATED STATUS PORTS NAMES
ncimange "/bin/sh -c /rest.sh" 41 seconds ago Up 34 seconds 0.0.0.0:80->80/tcp ncrest
docker日志ncrest
空的curl -i http://127.0.0.1:80/date
curl: (56) Recv failure: Connection reset by peer
docker exec -it ncrest /bin/bash
netstat -an|grep LISTEN
tcp 0 0 0.0.0.0:41783 0.0.0.0:* LISTEN
curl -i http://127.0.0.1:80/date
curl: (7) Failed to connect to 127.0.0.1 port 80: Connection refused
curl -i http://127.0.0.1:41783/date
curl: (56) Recv failure: Connection reset by peer
netcat traditional
和netcat openbsd
,两者略有不同。netcat
包是netcat-traditional
的别名
例如,在您的情况下,您的nc命令应该是nc-l-p80
,因为nc-l80
只能在netcat openbsd
上工作
tl;dr:如果您希望在未修改的情况下使用脚本,请安装netcat openbsd
而不是ǹetcat
。您安装的netcat是“错误的”。Debian有两个netcat软件包:netcat traditional
和netcat openbsd
,两者略有不同。netcat
包是netcat-traditional
的别名
例如,在您的情况下,您的nc命令应该是nc-l-p80
,因为nc-l80
只能在netcat openbsd
上工作
tl;dr:如果希望未经修改地使用脚本,请安装netcat openbsd
而不是ǹetcat