Created
September 30, 2011 20:33
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Incomplete HTTP server in Awk
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| BEGIN { | |
| RS = ORS = "\r\n" | |
| HttpService = "/inet/tcp/8000/0/0" | |
| while(1) { | |
| _NR = 0 | |
| while((HttpService |& getline) > 0) { | |
| _NR += 1 | |
| handle_header($0) | |
| } | |
| close(HttpService) | |
| } | |
| } | |
| function handle_header(line) { | |
| if(_NR == 1) { | |
| split(line, toks, " "); | |
| METHOD = toks[1] | |
| PATH = toks[2] | |
| delete HEADERS | |
| } | |
| if(line == "") { | |
| # Done receiving request | |
| switch(METHOD) { | |
| case "GET": resp = handle_GET(PATH, HEADERS); | |
| } | |
| send_resp(resp) | |
| } | |
| else { | |
| split(line, toks, ": "); | |
| HEADERS[toks[1]] = toks[2] | |
| } | |
| } | |
| function handle_GET(path, headers){ | |
| Hello = "<HTML><HEAD>" \ | |
| "<TITLE>A Famous Greeting</TITLE></HEAD>" \ | |
| "<BODY><H1>Hello, world</H1></BODY></HTML>" | |
| printLog("GET request for " path) | |
| return Hello | |
| } | |
| function send_resp(Resp, Headers) { | |
| Len = length(Resp) + length(ORS) | |
| print "HTTP/1.0 200 OK" |& HttpService | |
| print "Content-Length: " Len ORS |& HttpService | |
| print Resp |& HttpService | |
| } | |
| function printLog(s){ | |
| SwapORS = ORS | |
| ORS = "\n" | |
| print s | |
| ORS = SwapORS | |
| } |
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