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A simple FastCGI PoC written in Swift
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| /*** | |
| Swift can say hello to your browser! | |
| Requirements | |
| ------------ | |
| * OSX Yosemite or newer | |
| * Xcode 7, Swift 2 | |
| * Homebrew | |
| ** packages: fastcgi, fcgi-swpawn, nginx packages | |
| Make it work | |
| ------------ | |
| # Download and compile the code | |
| swiftc -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk fcgi_app.swift -o fcgi_app | |
| # Configure Nginx front-end | |
| --- ... --- ... --- ... --- ... --- | |
| location /swift { | |
| root /usr/local/var/www/; | |
| fastcgi_pass 127.0.0.1:9000; | |
| fastcgi_index index.html; | |
| fastcgi_param SCRIPT_FILENAME /cgi-bin/fcgi$fastcgi_script_name; | |
| include fastcgi_params; | |
| } | |
| --- ... --- ... --- ... --- ... --- | |
| # Spawn your web app as a FCGI daemon | |
| --- ... --- ... --- ... --- ... --- | |
| /usr/local/bin/spawn-fcgi \ | |
| -a 127.0.0.1 -p 9000 \ | |
| -u segabor -g staff \ | |
| -f ./fcgi_app \ | |
| -P ./fcgi_app.pid | |
| --- ... --- ... --- ... --- ... --- | |
| # Open your browser and enjoy the result | |
| http://localhost/swift/hello | |
| ***/ | |
| import Darwin | |
| // | |
| // The ugly part -- attach fastcgi library | |
| // | |
| let handle = dlopen( | |
| "/usr/local/Cellar/fcgi/2.4.0/lib/libfcgi.dylib", | |
| RTLD_NOW) | |
| let sym = dlsym(handle, "FCGI_Accept") | |
| // lookup fcgi functions and map them to Swift types | |
| // | |
| typealias FCGI_Accept_T = @convention(c) (Void)->CInt | |
| let FCGI_Accept : ()->CInt = unsafeBitCast(sym, FCGI_Accept_T.self) | |
| let sym3 = dlsym(handle, "FCGI_puts") | |
| typealias FCGI_Puts_T = @convention(c) (UnsafeMutablePointer<CChar>)->CInt | |
| let FCGI_puts : FCGI_Puts_T = unsafeBitCast(sym3, FCGI_Puts_T.self) | |
| // | |
| // Let the fun begin | |
| // | |
| var r = FCGI_Accept() | |
| while r >= 0 { | |
| let str = "Content-type: text/html\r\n" + | |
| "\r\n" + | |
| "<!DOCTYPE html><html><head><title>Hello World</title></head><body>" + | |
| "<h1>FastCGI Hello! (Swift, fcgi_stdio library)</h1></body></html>" + | |
| "\r\n" | |
| FCGI_puts( UnsafeMutablePointer<CChar>( str.utf8.map { CChar(bitPattern: $0) } ) ) | |
| r = FCGI_Accept() | |
| } | |
| dlclose(handle) |
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