gistfile1.txt

package main

import (
    "fmt"
    "http"
    "regexp"
    /*"io"*/
    "log"
    "fcgi"
)

type Root struct {
    Url         string
    Root        string
}

type Site struct {
    HostRegexp  string
    Roots       []Root
    FcgiDialers []fcgi.Dialer
    FcgiHandler http.Handler
}

type Configuration struct {
    Address     string
    Sites       []Site
}

var configuration = Configuration{
    "0.0.0.0:80",
    []Site{
        Site{
            "(chocspace\\.com)|(localhost)",
            []Root{
                Root{
                    "/site_media",
                    "/srv/music/site_media",
                },
            },
            []fcgi.Dialer{
                fcgi.NewDialer("tcp", ":9001"),
            },
            nil,
        },
    },
}

func (cfg *Configuration) ServeHTTP(c *http.Conn, req *http.Request) {
    for _, site := range cfg.Sites {
        match, _ := regexp.MatchString( site.HostRegexp, req.Host )
        if match {
            fmt.Println("Serving")
            site.FcgiHandler.ServeHTTP(c, req)
            fmt.Println("Served")
            return
        }
    }
}

func main() {
    println("serving on", configuration.Address)

    // prepare handlers
    for _, site := range configuration.Sites {
        handler, err := fcgi.Handler(site.FcgiDialers)
        site.FcgiHandler = handler

        if err != nil {
            log.Exit("fcgi.Handler:", err)
        }
    }

    http.Handle("/", &configuration)

    err := http.ListenAndServe(configuration.Address, nil)
    if err != nil {
        log.Exit("ListenAndServe:", err)
    }

    return
}



/*
Error:
serving on 0.0.0.0:80
Serving
panic: runtime error: invalid memory address or nil pointer dereference

panic PC=0xb74c6dcc
runtime.panic+0x97 /home/jpic/src/go/src/pkg/runtime/proc.c:1011
	runtime.panic(0x0, 0x80d1b60)
panicstring+0x5e /home/jpic/src/go/src/pkg/runtime/runtime.c:83
	panicstring(0x80d1b60, 0xb7799a98)
sigpanic+0x8f /home/jpic/src/go/src/pkg/runtime/linux/thread.c:285
	sigpanic()
main.*Configuration·ServeHTTP+0x183 /home/jpic/src/goserver/serve.go:53
	main.*Configuration·ServeHTTP(0x0, 0xb779f180, 0xb770a150, 0x8)
http.*ServeMux·ServeHTTP+0x207 /home/jpic/src/go/src/pkg/http/server.go:508
	http.*ServeMux·ServeHTTP(0x80e64a4, 0xb779f180, 0xb770a150, 0x1)
http.*Conn·serve+0x73 /home/jpic/src/go/src/pkg/http/server.go:289
	http.*Conn·serve(0xb76a6818, 0xb779f180)
goexit /home/jpic/src/go/src/pkg/runtime/proc.c:145
	goexit()

goroutine 3 [4]:
gosched+0x66 /home/jpic/src/go/src/pkg/runtime/proc.c:541
	gosched()
chanrecv+0x14b /home/jpic/src/go/src/pkg/runtime/chan.c:355
	chanrecv(0xb76b2430, 0xb76feb40, 0x1, 0x808e1ed)
runtime.chanrecv1+0x37 /home/jpic/src/go/src/pkg/runtime/chan.c:429
	runtime.chanrecv1(0xb76b2400, 0xb76b6c84)
net.*pollServer·WaitRead+0x4d /home/jpic/src/go/src/pkg/net/fd.go:272
	net.*pollServer·WaitRead(0xb76b2400, 0xb76b3f00, 0xb)
net.*netFD·Read+0x19b /home/jpic/src/go/src/pkg/net/fd.go:380
	net.*netFD·Read(0xb76fe740, 0xb76b3f00, 0x1, 0x8, 0x0, ...)
net.*TCPConn·Read+0x70 /home/jpic/src/go/src/pkg/net/tcpsock.go:92
	net.*TCPConn·Read(0xb76b3f00, 0xb7799940, 0x8, 0x8, 0x0, ...)
fcgi.*lockReadWriteCloser·Read+0x50 /home/jpic/src/goserver/fcgi/listener.go:558
	fcgi.*lockReadWriteCloser·Read(0xb76a6900, 0xb7799940, 0x8, 0x8, 0x0, ...)
io.ReadAtLeast+0x91 /home/jpic/src/go/src/pkg/io/io.go:171
	io.ReadAtLeast(0xb76fe580, 0xb7799940, 0x8, 0x8, 0x0, ...)
io.ReadFull+0x4b /home/jpic/src/go/src/pkg/io/io.go:191
	io.ReadFull(0xb76feaa0, 0xb76fe580, 0xb7799940, 0x8, 0x8, ...)
encoding/binary.Read+0x1fe /home/jpic/src/go/src/pkg/encoding/binary/binary.go:138
	encoding/binary.Read(0xb76feaa0, 0xb76fe580, 0xb7799940, 0x8, 0x8, ...)
fcgi.*wsConn·readAllPackets+0xb2 /home/jpic/src/goserver/fcgi/handler.go:191
	fcgi.*wsConn·readAllPackets(0xb76feaa0, 0xb76fe580)
goexit /home/jpic/src/go/src/pkg/runtime/proc.c:145
	goexit()

goroutine 2 [3]:
runtime.entersyscall+0x5d /home/jpic/src/go/src/pkg/runtime/proc.c:562
	runtime.entersyscall()
syscall.Syscall6+0x5 /home/jpic/src/go/src/pkg/syscall/asm_linux_386.s:40
	syscall.Syscall6()
syscall.EpollWait+0x71 /home/jpic/src/go/src/pkg/syscall/zsyscall_linux_386.go:132
	syscall.EpollWait(0x100, 0x6, 0xb779c900, 0x1, 0xffffffff, ...)
net.*pollster·WaitFD+0x111 /home/jpic/src/go/src/pkg/net/fd_linux.go:116
	net.*pollster·WaitFD(0x6, 0xb779c900, 0x1, 0x1, 0xffffffff, ...)
net.*pollServer·Run+0xc9 /home/jpic/src/go/src/pkg/net/fd.go:232
	net.*pollServer·Run(0xb76a68a8, 0x0)
goexit /home/jpic/src/go/src/pkg/runtime/proc.c:145
	goexit()

goroutine 1 [4]:
gosched+0x66 /home/jpic/src/go/src/pkg/runtime/proc.c:541
	gosched()
chanrecv+0x14b /home/jpic/src/go/src/pkg/runtime/chan.c:355
	chanrecv(0xb779ec70, 0xb76fe560, 0x1, 0x808e1ed)
runtime.chanrecv1+0x37 /home/jpic/src/go/src/pkg/runtime/chan.c:429
	runtime.chanrecv1(0xb779ec40, 0xb76b5cd4)
net.*pollServer·WaitRead+0x4d /home/jpic/src/go/src/pkg/net/fd.go:272
	net.*pollServer·WaitRead(0xb779ec40, 0xb76b3180, 0x0)
net.*netFD·accept+0x2c2 /home/jpic/src/go/src/pkg/net/fd.go:508
	net.*netFD·accept(0xb76fe740, 0xb76b3180, 0x0, 0x0, 0xb, ...)
net.*TCPListener·AcceptTCP+0x53 /home/jpic/src/go/src/pkg/net/tcpsock.go:253
	net.*TCPListener·AcceptTCP(0xb76b3180, 0x809509c, 0x0, 0x0)
net.*TCPListener·Accept+0x36 /home/jpic/src/go/src/pkg/net/tcpsock.go:263
	net.*TCPListener·Accept(0xb77998e8, 0xb76b5e64, 0x0, 0x0, 0xb77999e0, ...)
http.Serve+0x6b /home/jpic/src/go/src/pkg/http/server.go:551
	http.Serve(0xb77998e8, 0x0, 0x0, 0x0, 0x0, ...)
http.ListenAndServe+0x84 /home/jpic/src/go/src/pkg/http/server.go:596
	http.ListenAndServe(0xb76fe820, 0xb77998e8, 0xb76fe800, 0xb76a6818, 0xb76fe820, ...)
main.main+0x24e /home/jpic/src/goserver/serve.go:75
	main.main()
mainstart+0xf /home/jpic/src/go/src/pkg/runtime/386/asm.s:83
	mainstart()
goexit /home/jpic/src/go/src/pkg/runtime/proc.c:145
	goexit()


The fastcgi server should be running:

(music)natacha newproj # netstat -a | grep 9001
tcp        0      0 localhost:9001          *:*                     LISTEN     
tcp        0      0 localhost:40842         localhost:9001          TIME_WAIT  
tcp        0      0 localhost:40844         localhost:9001          TIME_WAIT  

(music)natacha newproj # ps aux | grep fcgi
root     20173  0.0  0.9  13856  8384 ?        S    16:30   0:00 python ./manage.py runfcgi protocol=fcgi host=localhost port=9001
root     20174  0.0  0.8  13856  8064 ?        S    16:30   0:00 python ./manage.py runfcgi protocol=fcgi host=localhost port=9001
root     20175  0.0  0.8  13856  7904 ?        S    16:30   0:00 python ./manage.py runfcgi protocol=fcgi host=localhost port=9001
root     20176  0.0  0.8  13856  7904 ?        S    16:30   0:00 python ./manage.py runfcgi protocol=fcgi host=localhost port=9001
root     20177  0.0  0.8  13856  8064 ?        S    16:30   0:00 python ./manage.py runfcgi protocol=fcgi host=localhost port=9001
root     20178  0.0  0.8  13856  8004 ?        S    16:30   0:00 python ./manage.py runfcgi protocol=fcgi host=localhost port=9001
root     20362  0.0  0.0   3460   664 pts/12   S+   16:39   0:00 grep --colour=auto fcgi
*/

I'm not 100% sure what's happening but you can see where the error comes from:
main.*Configuration·ServeHTTP(0x0, 0xb779f180, 0xb770a150, 0x8)

That "0x0" in there should be a *http.Conn, but nothing in that stack trace has gotten to the fcgi code yet.

Thanks again, i'll let you know how it goes when i figure the fix