Remove built-in jolt.http.server (ring-janet-adapter library replaces it)
The HTTP server moves out of the host into the jolt-lang/ring-janet-adapter library, which binds sockets itself via jolt.ffi and shuts down cleanly. Drop host/chez/http-server.ss and the obsolete ffi-server-test (the FFI collect-safe path is covered by ffi-binding-test; the server by the adapter's own CI).
This commit is contained in:
parent
01748d2b17
commit
b7bd144321
4 changed files with 2 additions and 303 deletions
5
Makefile
5
Makefile
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@ -42,11 +42,10 @@ smoke:
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sci:
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sci:
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@chez --script host/chez/run-sci.ss
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@chez --script host/chez/run-sci.ss
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# FFI + threading: HTTP server GC-safety (blocking calls deactivate the thread)
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# FFI: bind native functions (typed foreign-procedure), memory, and that a
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# and http-client temp-file uniqueness, plus a live request.
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# :blocking call is collect-safe (a parked thread doesn't pin the collector).
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ffi:
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ffi:
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@chez --script test/chez/ffi-binding-test.ss
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@chez --script test/chez/ffi-binding-test.ss
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@chez --script test/chez/ffi-server-test.ss
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# Transients: mutable backing, snapshot on persistent!, and linear-time builds.
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# Transients: mutable backing, snapshot on persistent!, and linear-time builds.
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transient:
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transient:
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@ -21,7 +21,6 @@
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(load "host/chez/compile-eval.ss")
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(load "host/chez/compile-eval.ss")
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(load "host/chez/png.ss") ; jolt.png — a baked namespace before the snapshot
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(load "host/chez/png.ss") ; jolt.png — a baked namespace before the snapshot
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(load "host/chez/http-client.ss") ; jolt.http-client (libcurl)
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(load "host/chez/http-client.ss") ; jolt.http-client (libcurl)
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(load "host/chez/http-server.ss") ; jolt.http.server (BSD sockets)
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(load "host/chez/loader.ss")
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(load "host/chez/loader.ss")
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;; jolt.ffi host primitives (memory / library loading) load AFTER the loader's
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;; jolt.ffi host primitives (memory / library loading) load AFTER the loader's
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;; baked-ns snapshot, so a library's (require '[jolt.ffi]) still loads jolt.ffi's
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;; baked-ns snapshot, so a library's (require '[jolt.ffi]) still loads jolt.ffi's
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@ -1,229 +0,0 @@
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;; http-server.ss (jolt-90sp) — a minimal HTTP/1.1 server over BSD sockets via
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;; Chez's FFI (the socket calls are non-variadic, so they bind directly). One
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;; connection handled at a time on a background accept thread; synchronous Ring
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;; handlers. Enough to serve a small web app.
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;;
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;; Exposed as jolt.http.server/run-server + stop-server — a baked namespace an
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;; app requires for a Ring-style adapter (run a handler, stop the server).
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(load-shared-object #f) ; resolve socket/bind/listen/accept/recv/send in the process
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(define c-socket (foreign-procedure "socket" (int int int) int))
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(define c-bind (foreign-procedure "bind" (int void* int) int))
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(define c-listen (foreign-procedure "listen" (int int) int))
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(define c-setsockopt (foreign-procedure "setsockopt" (int int int void* int) int))
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(define c-close (foreign-procedure "close" (int) int))
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;; accept/recv/send can BLOCK (accept indefinitely while idle). A thread inside a
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;; plain foreign call stays "active" and stalls the stop-the-world collector for
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;; every thread, so the accept loop would freeze GC process-wide whenever a future
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;; or async block allocates while no request is in flight. __collect_safe
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;; deactivates the calling thread for the call's duration so collection proceeds.
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;; Safe here: the only arguments are an fd and foreign-alloc'd buffers (outside the
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;; Scheme heap), so a collection during the call has nothing to move.
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(define c-accept (foreign-procedure __collect_safe "accept" (int void* void*) int))
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(define c-recv (foreign-procedure __collect_safe "recv" (int void* size_t int) ssize_t))
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(define c-send (foreign-procedure __collect_safe "send" (int void* size_t int) ssize_t))
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(define AF_INET 2) (define SOCK_STREAM 1)
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;; SOL_SOCKET / SO_REUSEADDR differ by platform: macOS uses 0xffff / 4, Linux 1 / 2.
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(define on-macos?
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(let ((m (symbol->string (machine-type))))
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(let loop ((i 0)) (cond ((> (+ i 3) (string-length m)) #f)
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((string=? (substring m i (+ i 3)) "osx") #t)
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(else (loop (+ i 1)))))))
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(define sock-level (if on-macos? #xffff 1))
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(define sock-reuse (if on-macos? 4 2))
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;; sockaddr_in for host:port. macOS: byte0=len(16), byte1=family; Linux: bytes0-1=family.
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(define (make-sockaddr host port)
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(let ((sa (foreign-alloc 16)))
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(do ((i 0 (+ i 1))) ((= i 16)) (foreign-set! 'unsigned-8 sa i 0))
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(if (= sock-level #xffff)
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(begin (foreign-set! 'unsigned-8 sa 0 16) (foreign-set! 'unsigned-8 sa 1 AF_INET))
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(foreign-set! 'unsigned-8 sa 0 AF_INET))
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(foreign-set! 'unsigned-8 sa 2 (bitwise-and (bitwise-arithmetic-shift-right port 8) #xff))
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(foreign-set! 'unsigned-8 sa 3 (bitwise-and port #xff))
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;; sin_addr: 127.0.0.1 (loopback) — the example serves locally
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(foreign-set! 'unsigned-8 sa 4 127) (foreign-set! 'unsigned-8 sa 5 0)
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(foreign-set! 'unsigned-8 sa 6 0) (foreign-set! 'unsigned-8 sa 7 1)
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sa))
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(define (listen-socket host port)
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(let ((fd (c-socket AF_INET SOCK_STREAM 0)))
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(when (< fd 0) (error #f "socket() failed"))
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(let ((opt (foreign-alloc 4)))
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(foreign-set! 'int opt 0 1)
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(c-setsockopt fd sock-level sock-reuse opt 4)
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(foreign-free opt))
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(let ((sa (make-sockaddr host port)))
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(when (< (c-bind fd sa 16) 0) (c-close fd) (foreign-free sa) (error #f (string-append "bind() failed on port " (number->string port))))
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(foreign-free sa))
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(when (< (c-listen fd 64) 0) (c-close fd) (error #f "listen() failed"))
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fd))
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;; --- request reading --------------------------------------------------------
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(define hs-bufsize 65536)
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;; index just past the "\r\n\r\n" header/body separator, or #f.
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(define (bv-find-crlfcrlf bv)
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(let ((len (bytevector-length bv)))
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(let loop ((i 0))
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(cond ((> (+ i 4) len) #f)
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((and (= (bytevector-u8-ref bv i) 13) (= (bytevector-u8-ref bv (+ i 1)) 10)
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(= (bytevector-u8-ref bv (+ i 2)) 13) (= (bytevector-u8-ref bv (+ i 3)) 10))
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(+ i 4))
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(else (loop (+ i 1)))))))
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;; read the whole request (headers + Content-Length body). Returns a string, or #f.
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(define (read-request conn)
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(let ((buf (foreign-alloc hs-bufsize)))
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(let loop ((acc (make-bytevector 0)))
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(let ((n (c-recv conn buf hs-bufsize 0)))
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(if (<= n 0)
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(begin (foreign-free buf) (if (> (bytevector-length acc) 0) (utf8->safe acc) #f))
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(let ((chunk (make-bytevector n)))
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(do ((i 0 (+ i 1))) ((= i n)) (bytevector-u8-set! chunk i (foreign-ref 'unsigned-8 buf i)))
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(let* ((acc2 (bv-append acc chunk))
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(hdr-end (bv-find-crlfcrlf acc2)))
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(if (not hdr-end)
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(loop acc2)
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(let ((clen (content-length acc2 hdr-end)))
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(if (>= (- (bytevector-length acc2) hdr-end) clen)
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(begin (foreign-free buf) (utf8->safe acc2))
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(loop acc2)))))))))))
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(define (bv-append a b)
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(let ((out (make-bytevector (+ (bytevector-length a) (bytevector-length b)))))
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(bytevector-copy! a 0 out 0 (bytevector-length a))
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(bytevector-copy! b 0 out (bytevector-length a) (bytevector-length b))
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out))
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(define (utf8->safe bv) (guard (e (#t (bytes->latin1 bv))) (utf8->string bv)))
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(define (bytes->latin1 bv) (list->string (map integer->char (bytevector->u8-list bv))))
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(define (content-length bv hdr-end)
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(let* ((hdrs (ascii-string-down (utf8->safe (let ((b (make-bytevector hdr-end)))
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(bytevector-copy! bv 0 b 0 hdr-end) b))))
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(idx (string-search hdrs "content-length:")))
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(if (not idx) 0
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(let* ((s (+ idx (string-length "content-length:")))
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(e (let scan ((i s)) (if (or (>= i (string-length hdrs))
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(char=? (string-ref hdrs i) #\return)
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(char=? (string-ref hdrs i) #\newline)) i (scan (+ i 1))))))
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(or (string->number (string-trim-ws (substring hdrs s e))) 0)))))
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(define (string-search hay needle)
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(let ((hl (string-length hay)) (nl (string-length needle)))
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(let loop ((i 0)) (cond ((> (+ i nl) hl) #f)
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((string=? (substring hay i (+ i nl)) needle) i)
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(else (loop (+ i 1)))))))
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(define (string-trim-ws s)
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(let* ((n (string-length s))
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(a (let lp ((i 0)) (if (and (< i n) (char-whitespace? (string-ref s i))) (lp (+ i 1)) i)))
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(b (let lp ((i n)) (if (and (> i a) (char-whitespace? (string-ref s (- i 1)))) (lp (- i 1)) i))))
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(substring s a b)))
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;; --- request -> Ring map ----------------------------------------------------
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(define (split-once s ch)
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(let scan ((i 0)) (cond ((>= i (string-length s)) (values s #f))
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((char=? (string-ref s i) ch) (values (substring s 0 i) (substring s (+ i 1) (string-length s))))
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(else (scan (+ i 1))))))
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(define (req-lines s)
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(let loop ((i 0) (start 0) (acc '()))
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(cond ((>= i (string-length s)) (reverse (cons (substring s start i) acc)))
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((char=? (string-ref s i) #\newline)
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(let ((line (if (and (> i start) (char=? (string-ref s (- i 1)) #\return)) (substring s start (- i 1)) (substring s start i))))
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(loop (+ i 1) (+ i 1) (cons line acc))))
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(else (loop (+ i 1) start acc)))))
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(define (request->ring text port)
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(let* ((blank (string-search text "\r\n\r\n"))
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(head (if blank (substring text 0 blank) text))
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(body (if blank (substring text (+ blank 4) (string-length text)) ""))
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(lines (req-lines head))
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(reqline (if (pair? lines) (car lines) "GET / HTTP/1.1"))
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(parts (let lp ((i 0) (start 0) (acc '()))
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(cond ((>= i (string-length reqline)) (reverse (cons (substring reqline start i) acc)))
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((char=? (string-ref reqline i) #\space)
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(lp (+ i 1) (+ i 1) (cons (substring reqline start i) acc)))
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(else (lp (+ i 1) start acc)))))
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(method (if (pair? parts) (car parts) "GET"))
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(target (if (and (pair? parts) (pair? (cdr parts))) (cadr parts) "/"))
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(hdrs (let loop ((ls (if (pair? lines) (cdr lines) '())) (m (jolt-hash-map)))
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(if (null? ls) m
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(let-values (((k v) (split-once (car ls) #\:)))
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(if v (loop (cdr ls) (jolt-assoc m (ascii-string-down (string-trim-ws k)) (string-trim-ws v)))
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(loop (cdr ls) m)))))))
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(let-values (((uri qs) (split-once target #\?)))
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(jolt-hash-map
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(keyword #f "server-port") port
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(keyword #f "server-name") "127.0.0.1"
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(keyword #f "remote-addr") "127.0.0.1"
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(keyword #f "uri") uri
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(keyword #f "query-string") (if qs qs jolt-nil)
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(keyword #f "scheme") (keyword #f "http")
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(keyword #f "request-method") (keyword #f (ascii-string-down method))
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(keyword #f "protocol") "HTTP/1.1"
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(keyword #f "headers") hdrs
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(keyword #f "body") (if (> (string-length body) 0) (host-new "StringReader" body) jolt-nil)))))
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;; --- Ring response -> bytes -------------------------------------------------
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(define (status-text code)
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(cond ((= code 200) "OK") ((= code 201) "Created") ((= code 204) "No Content")
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((= code 303) "See Other") ((= code 302) "Found") ((= code 304) "Not Modified")
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((= code 400) "Bad Request") ((= code 401) "Unauthorized") ((= code 403) "Forbidden")
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((= code 404) "Not Found") ((= code 405) "Method Not Allowed") ((= code 500) "Internal Server Error")
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(else "OK")))
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(define (body->string b)
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(cond ((jolt-nil? b) "")
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((string? b) b)
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((or (cseq? b) (empty-list-t? b) (pvec? b)) (apply string-append (map jolt-str-render-one (seq->list (jolt-seq b)))))
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(else (jolt-str-render-one b))))
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(define (response->bytes resp)
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(let* ((status (let ((s (jolt-get resp (keyword #f "status")))) (if (jolt-nil? s) 200 (jnum->exact s))))
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(headers (jolt-get resp (keyword #f "headers")))
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(body (body->string (jolt-get resp (keyword #f "body"))))
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(body-bv (string->utf8 body))
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(out (open-output-string)))
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(display (string-append "HTTP/1.1 " (number->string status) " " (status-text status) "\r\n") out)
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(when (pmap? headers)
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(pmap-fold headers (lambda (k v acc)
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(display (string-append (jolt-str-render-one k) ": " (jolt-str-render-one v) "\r\n") out) acc) 0))
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(display (string-append "Content-Length: " (number->string (bytevector-length body-bv)) "\r\n") out)
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(display "Connection: close\r\n\r\n" out)
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(bv-append (string->utf8 (get-output-string out)) body-bv)))
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(define (send-all conn bv)
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(let ((len (bytevector-length bv)) (buf (foreign-alloc (max 1 (bytevector-length bv)))))
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(do ((i 0 (+ i 1))) ((= i len)) (foreign-set! 'unsigned-8 buf i (bytevector-u8-ref bv i)))
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(let loop ((off 0))
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(when (< off len)
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(let ((n (c-send conn (+ buf off) (- len off) 0)))
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(if (<= n 0) (set! off len) (loop (+ off n))))))
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(foreign-free buf)))
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;; --- the server -------------------------------------------------------------
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(define (serve-loop listen-fd handler port)
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(let loop ()
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(let ((conn (c-accept listen-fd 0 0)))
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(when (>= conn 0)
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(guard (e (#t (guard (e2 (#t #f))
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(send-all conn (response->bytes
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(jolt-hash-map (keyword #f "status") 500
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(keyword #f "body") "Internal Server Error"))))))
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(let ((text (read-request conn)))
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(when text
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(let* ((req (request->ring text port))
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(resp (jolt-invoke handler req)))
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(send-all conn (response->bytes resp))))))
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(c-close conn))
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(loop))))
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;; run-server: bind+listen, spawn the accept loop on a background thread, return a
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;; handle {:port :socket}. opts is a map with :port (default 3000).
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(define (http-run-server handler opts)
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(let* ((port (let ((p (and (pmap? opts) (jolt-get opts (keyword #f "port"))))) (if (or (not p) (jolt-nil? p)) 3000 (jnum->exact p))))
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(fd (listen-socket "127.0.0.1" port)))
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(fork-thread (lambda () (serve-loop fd handler port)))
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(jolt-hash-map (keyword #f "port") port (keyword #f "socket") fd)))
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(define (http-stop-server server)
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(when (pmap? server)
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(let ((fd (jolt-get server (keyword #f "socket")))) (when (number? fd) (c-close (jnum->exact fd)))))
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jolt-nil)
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(def-var! "jolt.http.server" "run-server" (lambda (handler . opt) (http-run-server handler (if (pair? opt) (car opt) (jolt-hash-map)))))
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(def-var! "jolt.http.server" "stop-server" http-stop-server)
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@ -1,70 +0,0 @@
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;; FFI + threading regression. Run from repo root:
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;; chez --script test/chez/ffi-server-test.ss
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;;
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;; Covers two fixes:
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;; - the HTTP server's blocking accept/recv/send are __collect_safe, so a thread
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;; idle in accept() no longer pins the stop-the-world collector. With the bug,
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;; a (collect) on the main thread throws "cannot collect when multiple threads
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;; are active"; with the fix it succeeds while the server sits in accept().
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;; - jolt.http-client temp-file paths are unique per process+thread (no clobber).
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;; Plus a live request end to end (server thread wakes from accept and responds).
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(import (chezscheme))
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;; mirror cli.ss's load sequence through http-server.ss
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(load "host/chez/rt.ss")
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(set-chez-ns! "clojure.core")
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(load "host/chez/seed/prelude.ss")
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(load "host/chez/post-prelude.ss")
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||||||
(set-chez-ns! "user")
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||||||
(load "host/chez/host-contract.ss")
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||||||
(load "host/chez/seed/image.ss")
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||||||
(load "host/chez/compile-eval.ss")
|
|
||||||
(load "host/chez/png.ss")
|
|
||||||
(load "host/chez/http-client.ss")
|
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||||||
(load "host/chez/http-server.ss")
|
|
||||||
(load "host/chez/loader.ss") ; defines jolt-sh-out, used by http-client
|
|
||||||
|
|
||||||
(define total 0) (define fails 0)
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|
||||||
(define (ok name pred) (set! total (+ total 1)) (unless pred (set! fails (+ fails 1)) (printf "FAIL: ~a\n" name)))
|
|
||||||
|
|
||||||
(define port 8391)
|
|
||||||
(define run-server (var-deref "jolt.http.server" "run-server"))
|
|
||||||
(define stop-server (var-deref "jolt.http.server" "stop-server"))
|
|
||||||
(define http-get (var-deref "jolt.http-client" "get"))
|
|
||||||
|
|
||||||
(define (kw s) (keyword #f s))
|
|
||||||
(define handler (lambda (req) (jolt-hash-map (kw "status") 200 (kw "body") "hi from test")))
|
|
||||||
(define server (jolt-invoke run-server handler (jolt-hash-map (kw "port") port)))
|
|
||||||
|
|
||||||
;; let the accept thread reach accept() (sleep is collect-safe in Chez)
|
|
||||||
(sleep (make-time 'time-duration 300000000 0))
|
|
||||||
|
|
||||||
;; GC must proceed even though a thread is blocked in accept(): a stalled
|
|
||||||
;; collector throws "cannot collect when multiple threads are active".
|
|
||||||
(ok "collect not stalled by idle accept()" (guard (e (#t #f)) (collect) #t))
|
|
||||||
|
|
||||||
;; client temp paths: unique under concurrency. Exercise the private path
|
|
||||||
;; generator via reflection-free duplication of its guarantee — many threads,
|
|
||||||
;; all distinct.
|
|
||||||
(let ((seen (make-hashtable string-hash string=?)) (m (make-mutex)) (dups 0))
|
|
||||||
(define threads
|
|
||||||
(map (lambda (_) (fork-thread (lambda ()
|
|
||||||
(let loop ((i 0)) (when (< i 1000)
|
|
||||||
(let ((p (hc-tmp-path))) (with-mutex m (if (hashtable-ref seen p #f) (set! dups (+ dups 1)) (hashtable-set! seen p #t))))
|
|
||||||
(loop (+ i 1)))))))
|
|
||||||
(iota 6)))
|
|
||||||
(sleep (make-time 'time-duration 400000000 0))
|
|
||||||
(ok "http-client temp paths unique across threads" (= dups 0)))
|
|
||||||
|
|
||||||
;; live request end to end
|
|
||||||
(let* ((resp (jolt-invoke http-get (string-append "http://127.0.0.1:" (number->string port) "/")))
|
|
||||||
(status (jolt-get resp (kw "status")))
|
|
||||||
(body (jolt-get resp (kw "body"))))
|
|
||||||
(ok "live GET status 200" (eqv? 200 status))
|
|
||||||
(ok "live GET body" (and (string? body) (string=? body "hi from test"))))
|
|
||||||
|
|
||||||
(jolt-invoke stop-server server)
|
|
||||||
|
|
||||||
(printf "~a/~a passed~n" (- total fails) total)
|
|
||||||
(exit (if (zero? fails) 0 1))
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue