Question

我一直在寻找使用nc作为Docker容器的单行的最小REST Web服务器。例如：

* http://localhost/echo/marcello: prints marcello
* http://localhost/date: prints the server's date
* http://localhost/...: others

我正在查看问题＆＃34; Minimal web server using netcat＆＃34;，但它代理了对shell脚本的调用...我只需要一个像这样的衬里

while true ; do nc -l -p 1500 -c 'echo -e "HTTP/1.1 200 OK\n\n $(date)"'; done

发布的其他解决方案很长并且从文件加载......

Answer 1

我攻击了@syme在＆＃34; https://stackoverflow.com/a/24342101/433814＆＃34;并创建了单行REST服务器。缺少某些标头，但它正确处理HTTP GET和404未实现的资源。

rm -f out ; mkfifo out ; trap "rm -f out" EXIT ; while true ; do cat out | nc -l 1500 > >(export REQUEST= ; while read line ; do line=$(echo "$line" | tr -d '[\r\n]') ; if echo "$line" | grep -qE '^GET /' ; then REQUEST=$(echo "$line" | cut -d ' ' -f2) ; elif [ "x$line" = x ] ; then HTTP_200="HTTP/1.1 200 OK" ; HTTP_LOCATION="Location:" ; HTTP_404="HTTP/1.1 404 Not Found" ; 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

格式化版本位于https://gist.github.com/marcellodesales/9e4288f35ac2cc3e1b83#file-formatted

上面的API实现了以下内容：

的 /回波/ {名称}

返回给定的{name}

$ curl -i http://localhost:1500/echo/marcello HTTP/1.1 200 OK Location: /echo/marcello marcello

的 /日期

返回服务器的日期

$ curl -i http://localhost:1500/date Sun Oct 19 14:12:27 PDT 2014

的 /统计

返回服务器的统计信息

$ curl -i http://localhost:1500/stats procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free buff cache si so bi bo in cs us sy id wa st 0 0 11 374 383 2198 0 0 6 22 33 8 2 2 97 0 0

的 /净

打印服务器的网络

$ curl -i http://localhost:1500/net docker0 Link encap:Ethernet HWaddr 56:84:7a:fe:97:99 inet addr:172.17.42.1 Bcast:0.0.0.0 Mask:255.255.0.0 inet6 addr: fe80::5484:7aff:fefe:9799/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:120694 errors:0 dropped:0 overruns:0 frame:0 TX packets:141757 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:272911625 (272.9 MB) TX bytes:289945068 (289.9 MB) eth0 Link encap:Ethernet HWaddr 00:0c:29:1f:d3:b5 inet addr:192.168.248.206 Bcast:192.168.248.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe1f:d3b5/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2322493 errors:0 dropped:0 overruns:0 frame:0 TX packets:1098965 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2367412677 (2.3 GB) TX bytes:700548644 (700.5 MB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:151566 errors:0 dropped:0 overruns:0 frame:0 TX packets:151566 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:305833574 (305.8 MB) TX bytes:305833574 (305.8 MB)

的 / ANYTHING / NOT / IMPLEMENTED

对于服务器未实现的任何内容，它会打印404消息。

$ curl -i http://localhost:1500/wrong HTTP/1.1 404 Not Found Location: /wrong Resource /wrong NOT FOUND!

这是来自上述GIST的格式化解决方案。您可以将其另存为＆＃34; web.sh＆＃34;并运行：）

rm -f out mkfifo out trap "rm -f out" EXIT while true do cat out | nc -l 1500 > >( # 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 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

Answer 2

Bash with NetCat的另一个完整而简单的解决方案如下。它支持内容类型，文件大小等等。最新版本可在https://github.com/jdoleczek/Bash-NetCat-HTTPD/blob/master/httpd.sh

找到

#!/bin/bash
# LICENSE MIT

PORT=${1:-8080}
FILES=${2:-"./"}

NS=$(netstat -taupen 2>/dev/null | grep ":$PORT ")
test -n "$NS" && echo "Port $PORT is already taken" && exit 1

echo -e "\n\tHTTPD started for files in $FILES:"

for IP in $(ifconfig | grep "inet addr" | cut -d ':' -f 2 | cut -d ' ' -f 1) ; do
    echo -e "\tlistening at $IP:$PORT"
done

echo -e "\n"
FIFO="/tmp/httpd$PORT"
rm -f $FIFO
mkfifo $FIFO
trap ctrl_c INT

function ctrl_c() {
    rm -f $FIFO && echo -e "\n\tServer shut down.\n" && exit
}

while true; do (
    read req < $FIFO;
    req=$(echo $req | cut -d" " -f2 | cut -d"#" -f1 | cut -d"?" -f1 | cut -c2-);
    >&2 echo -e -n "\tRequest: \"$req\"\t";
    test -z "$req" && req="index.html"

    if [ -f "$FILES$req" ] ; then
        ext="${req##*.}"
        ext=$(echo "$ext" | tr '[:upper:]' '[:lower:]')

        case "$ext" in
            "html" | "htm") CONTENTTYPE="text/html; charset=UTF-8" ;;
            "json") CONTENTTYPE="application/json; charset=UTF-8" ;;
            "css" | "less" | "sass") CONTENTTYPE="text/css" ;;
            "txt") CONTENTTYPE="text/plain" ;;
            "xml") CONTENTTYPE="text/xml" ;;
            "js") CONTENTTYPE="application/javascript" ;;
            "jpg" | "jpeg") CONTENTTYPE="image/jpeg" ;;
            "png") CONTENTTYPE="image/png" ;;
            "gif") CONTENTTYPE="image/gif" ;;
            "ico") CONTENTTYPE="image/x-icon" ;;
            "wav") CONTENTTYPE="audio/wav" ;;
            "mp3") CONTENTTYPE="audio/mpeg3" ;;
            "avi") CONTENTTYPE="video/avi" ;;
            "mp4" | "mpg" | "mpeg" | "mpe") CONTENTTYPE="video/mpeg" ;;
            *) CONTENTTYPE="application/octet-stream"
        esac

        echo "HTTP/1.x 200 OK"
        echo "Date: $(LC_TIME=en_US date -u)"
        echo "Server: promyk.doleczek.pl"
        echo "Connection: close"
        echo "Pragma: public"
        echo "Content-Type: $CONTENTTYPE"
        FILESIZE=$(wc -c < "$FILES$req")
        echo -e "Content-Length: $FILESIZE\n"
        cat "$FILES$req"
        >&2 echo "[ ok ]"
    else
        echo -e "HTTP/1.x 404 Not found\n\n<h1>File not found.</h1>"
        >&2 echo "[ no file ]"
    fi
) | nc -l -k -w 1 -p $PORT > $FIFO; done;

使用netcat nc创建最小的REST Web服务器

2 个答案: