Drakma和Dexador都仅在请求localhost时在USocket调用上均失败,从而请求Internet正常 [英] Drakma and Dexador both fails at USocket call while requesting localhost only, requesting the internet works fine
问题描述
我目前有无法解释的行为,请感谢任何线索。
背景
我有一个通过PHP内置开发网络服务器<$ c $在本地运行的wordpress实例。 c> php -S localhost:8000 -t / doc / root / wordpress 。该站点可以正常运行,我可以使用 curl http:// localhost:8000 /
成功获取它,也可以在Web浏览器中打开它。
但是简单的程序例如:
(drakma:http-request http:// localhost:8000 /)
或
(dexador:get http:// localhost:8000 /)
-都失败。
drakma
失败,回溯:
条件USOCKET:CONNECTION-REFUSED-ERROR已发出信号。
[类型USOCKET:CONNECTION-REFUSED-ERROR的条件]
重新启动:
0:[重试]重试SLIME REPL评估请求。
1:[* ABORT]返回SLIME的顶层。
2:[ABORT]中止线程(#< THREAD repl-thread RUNNING {1004CC9B93}>))
回溯:
0:((USOCKET :: HANDLE-条件#< SB-BSD-SOCKETS:CONNECTION-REFUSED-ERROR {100435B3A3}>#< USOCKET:STREAM-USOCKET {100435AE33}>)
1:(SB-KERNEL ::%SIGNAL#< ; SB-BSD-SOCKETS:CONNECTION-REFUSED-ERROR {100435B3A3}>)
2:(ERROR SB-BSD-SOCKETS:CONNECTION-REFUSED-ERROR:ERRNO 61:SYSCALL connect)
3:(SB-BSD-SOCKETS:套接字错误连接 61)
4:(SB-BSD-SOCKETS :: CALL-WITH-SOCKET-ADDR#< SB-BSD-SOCKETS:INET-SOCKET 127.0.0.1:49431,fd:16 {100435AD23}>(#(127 0 0 1)8000)#<关闭(Flet SB-BSD-SOCKETS :: WITH-SOCKET-ADDR-THUNK:IN SB-BSD-袜子:..
5:((::方法SB-BSD-SOCKETS:SOCKET-CONNECT(SB-BSD-SOCKETS:SOCKET))#< SB-BSD-SOCKETS:INET-SOCKET 127.0.0.1:49431 ,fd:16 {100435AD23}>#(127 0 0 1)8000)[快速方法]
6:((FLET WITHOUT-INTERRUPTS-BODY-22:IN USOCKET:SOCKET-CONNECT))
7:(USOCKET:SOCKET-CONNECT loca lhost 8000:协议:流:元素类型的弹性流:八脚:超时20:截止时间无效:无延迟:如果支持:本地主机无效:本地端口无效)
8:(DRAKMA:HTTP-请求#< PURI:URI http:// localhost:8000 />)
9:(SB-INT:SIMPLE-EVAL-IN-LEXENV(DRAKMA:HTTP-REQUEST http:// localhost:8000 /)#< NULL-LEXENV>)
10:(EVAL(DRAKMA:HTTP-REQUEST http:// localhost:8000 /))
11:(SWANK :: EVAL-REGION (drakma:http-request \ http:// localhost:8000 / \)..)
12:(((LAMBDA NIL:IN SWANK-REPL :: REPL-EVAL))
13:(SWANK-REPL :: TRACK-PACKAGE#< CLOSURE(LAMBDA NIL:在SWANK-REPL :: REPL-EVAL){100435A53B}>)
14:(SWANK :: CALL-WITH- RETRY-RESTART重试SLIME REPL评估请求。#<关闭(LAMBDA NIL:在SWANK-REPL :: REPL-EVAL){100435A4DB}>)
15:(SWANK :: CALL-WITH-BUFFER -SYNTAX NIL#< CLOSURE(LAMBDA NIL:IN SWANK-REPL :: REPL-EVAL){100435A4BB}>)
16:(SWANK-REPL :: REPL-EVAL(drakma:http-request \ \ http:// localhost:8000 / \)..)
17 :(SB-INT:SIMPLE-EVAL-IN-LEXENV(SWANK-REPL:LISTENER-EVAL(drakma:http-request \ http:// localhost:8000 / \)..)
18:(EVAL(SWANK-REPL:LISTENER-EVAL(drakma:http-request \ http:// localhost:8000 / \)..)
19:(SWANK:EVAL-FOR- EMACS(SWANK-REPL:LISTENER-EVAL(drakma:http-request \ http:// localhost:8000 / \)..)
20:(SWANK :: PROCESS-REQUESTS NIL)
21:((LAMBDA NIL:在SWANK :: HANDLE-REQUESTS))
22:((LAMBDA NIL:在SWANK :: HANDLE-REQUESTS))
23:(SWANK / SBCL: :CALL-WITH-BREAK-HOOK#<功能SWANK:SWANK-DEBUGGER-HOOK> #<关闭(LAMBDA NIL:IN SWANK :: HANDLE-REQUESTS){1004CD008B}>)
24:((FLET SWANK / BACKEND:CALL-WITH-DEBUGGER-HOOK:IN / Users / ihar / .roswell / lisp / slime / 2019.02.02 / swank / sbcl.lisp)#<功能SWANK:SWANK-DEBUGGER-HOOK>#<关闭(LAMBDA NIL:IN SWANK :: HANDLE-REQUESTS){。
25:(SWANK :: CALL-WITH-BINDINGS((* STANDARD-INPUT *。#< SWANK / GRAY :: SLIME-INPUT-STREAM {1004BC9E93}>)))#<关闭(LAMBDA NIL: IN SWANK :: HANDLE-REQUESTS){1004CD00AB}>)
26:(SWANK :: HANDLE-REQUESTS#< SWANK :: MULTITHREADED-CONNECTION {10079AA873}> NIL)
27:( (FLET SB-UNIX :: BODY:IN SB-THREAD :: INITIAL-THREAD-FUNCTION-TRAMPOLINE))
28:((FLET WITHOUT-INTERRUPTS-BODY-4:IN SB-THREAD :: INITIAL -螺纹功能蹦床))
29:((Fleet SB-螺纹:: WITH-MUTEX-THUNK:在SB-螺纹::初始螺纹-功能-蹦床))
30:( (FLET WITHOUT-INTERRUPTS-BODY-1:在SB-螺纹:: CALL-WITH-MUTEX中))
31:(SB-螺纹:: CALL-WITH-MUTEX#<关闭(FLET SB-螺纹:: WITH-MU TEX-THUNK:在SB-螺纹中:: INITIAL-THREAD-FUNCTION-TRAMPOLINE){3A67D6B}> #< SB-THREAD:MUTEX线程结果锁定所有者:#< SB-THREAD:THREAD ..
32:(SB-THREAD :: INITIAL-THREAD-FUNCTION-TRAMPOLINE#< SB-线程:线程 REPL-线程正在运行{1004CC9B93}> NIL#<关闭(LAMBDA NIL:在SWANK-REPL :: SPAWN-REPL-THREAD){1004CC9B3B}> NIL)
33:(外部函数:call_into_lisp)
34:(外部函数:new_thread_trampoline)
35:(外部函数:_pthread_body)
36:(外部函数:_pthread_body)
37 :(外部函数:thread_start)
有趣的是,如果我将URI更改为互联网上的其他用户:
(drakma:http-request https://stackoverflow.com)
-然后就可以了。
我的笔记
$ b $可能是在我的本地计算机和本地php-server上下文中的某个地方。 b-
在回溯中我看到t他的线路
(USOCKET:SOCKET-CONNECT localhost 8000:协议:STREAM:ELEMENT-TYPE FLEXI-STREAMS:OCTET:TIMEOUT 20:DEADLINE NIL:NODELAY:IF-SUPPORTED:LOCAL-HOST NIL:LOCAL -PORT NIL)
。:local-host
和:local-port
这两个键都是nil
。可能就是问题所在,因为根据飞机规格,这些参数是负责在本地地址上调用bind()
(与调用非本地地址有什么不同吗?)。 -
在
drakma:http-request
的规范中也没有找到任何特殊参数来指定我正在请求本地服务器。根据示例, https://edicl.github.io/drakma/#ex -basic-auth ,请求任何URI都很简单,并且无需区分本地地址与非本地地址。
总结
-
为什么请求 http:// localhost:8000 不适用于
drakma
或dexador
。有人可以确认本地Web服务器的行为相同吗? -
bind()
syscall是否以某种方式被调用本地和非本地地址是否不同?
P.S。我已经问过类似的问题,首先它看起来像问题是旧软件版本。现在,我找到了该问题的其他详细信息,并对其进行了重新表述,所以我在这里提出另一个问题。
更新1
也许,问题出在特定的PHP内置Web服务器进行开发,因为只有使用PHP Web服务器+ SBCL + Drakma才能重现此问题。但是PHP Web服务器可以很好地用于 curl
,Go客户端和Web浏览器。
PHP版本:
PHP 7.3.1(cli)(内置: 2019年1月10日13:16:34)(NTS)版权所有(c)
1997-2018 The PHP Group Zend Engine v3.3.1,版权所有(c)1998-2018
Zend Technologies
with Zend OPcache v7.3.1,版权所有(c)1999-2018,由Zend Technologies
-安装了 brew install php
。
复制步骤
服务器:
php -S localhost:7070
然后尝试与客户端:
curl http:// localhost:7070
-工作正常(预期并收到状态码404)。
Lisp:
(drakma:http-request http:// localhost:7070)
-失败(状态码为404,但连接被拒绝
返回)。
谁来了详细信息,有一个讨论,其中Stas Boukarev帮助调试了该问题。 p>
运行 php -S localhost:7070
启动一个服务器,侦听我计算机上的 ipv6 地址,因此请求 ipv4 地址 127.0.0.1:7070
无效。
因此,服务器必须使用显式的 ipv4 地址 php -S 127.0.0.1:7070
启动,才能正常工作。
There is an unexplained behavior for me for the moment, appreciate any clues.
Background
I have a locally running instance of wordpress via PHP built-in development webserver php -S localhost:8000 -t /doc/root/wordpress
. The site works, I can fetch it with curl "http://localhost:8000/"
successfully, I can open it in a web browser also.
But simple programs like:
(drakma:http-request "http://localhost:8000/")
or
(dexador:get "http://localhost:8000/")
-- both fail.
drakma
fails with the backtrace:
Condition USOCKET:CONNECTION-REFUSED-ERROR was signalled.
[Condition of type USOCKET:CONNECTION-REFUSED-ERROR]
Restarts:
0: [RETRY] Retry SLIME REPL evaluation request.
1: [*ABORT] Return to SLIME's top level.
2: [ABORT] abort thread (#<THREAD "repl-thread" RUNNING {1004CC9B93}>)
Backtrace:
0: (USOCKET::HANDLE-CONDITION #<SB-BSD-SOCKETS:CONNECTION-REFUSED-ERROR {100435B3A3}> #<USOCKET:STREAM-USOCKET {100435AE33}>)
1: (SB-KERNEL::%SIGNAL #<SB-BSD-SOCKETS:CONNECTION-REFUSED-ERROR {100435B3A3}>)
2: (ERROR SB-BSD-SOCKETS:CONNECTION-REFUSED-ERROR :ERRNO 61 :SYSCALL "connect")
3: (SB-BSD-SOCKETS:SOCKET-ERROR "connect" 61)
4: (SB-BSD-SOCKETS::CALL-WITH-SOCKET-ADDR #<SB-BSD-SOCKETS:INET-SOCKET 127.0.0.1:49431, fd: 16 {100435AD23}> (#(127 0 0 1) 8000) #<CLOSURE (FLET SB-BSD-SOCKETS::WITH-SOCKET-ADDR-THUNK :IN SB-BSD-SOCKETS:..
5: ((:METHOD SB-BSD-SOCKETS:SOCKET-CONNECT (SB-BSD-SOCKETS:SOCKET)) #<SB-BSD-SOCKETS:INET-SOCKET 127.0.0.1:49431, fd: 16 {100435AD23}> #(127 0 0 1) 8000) [fast-method]
6: ((FLET "WITHOUT-INTERRUPTS-BODY-22" :IN USOCKET:SOCKET-CONNECT))
7: (USOCKET:SOCKET-CONNECT "localhost" 8000 :PROTOCOL :STREAM :ELEMENT-TYPE FLEXI-STREAMS:OCTET :TIMEOUT 20 :DEADLINE NIL :NODELAY :IF-SUPPORTED :LOCAL-HOST NIL :LOCAL-PORT NIL)
8: (DRAKMA:HTTP-REQUEST #<PURI:URI http://localhost:8000/>)
9: (SB-INT:SIMPLE-EVAL-IN-LEXENV (DRAKMA:HTTP-REQUEST "http://localhost:8000/") #<NULL-LEXENV>)
10: (EVAL (DRAKMA:HTTP-REQUEST "http://localhost:8000/"))
11: (SWANK::EVAL-REGION "(drakma:http-request \"http://localhost:8000/\") ..)
12: ((LAMBDA NIL :IN SWANK-REPL::REPL-EVAL))
13: (SWANK-REPL::TRACK-PACKAGE #<CLOSURE (LAMBDA NIL :IN SWANK-REPL::REPL-EVAL) {100435A53B}>)
14: (SWANK::CALL-WITH-RETRY-RESTART "Retry SLIME REPL evaluation request." #<CLOSURE (LAMBDA NIL :IN SWANK-REPL::REPL-EVAL) {100435A4DB}>)
15: (SWANK::CALL-WITH-BUFFER-SYNTAX NIL #<CLOSURE (LAMBDA NIL :IN SWANK-REPL::REPL-EVAL) {100435A4BB}>)
16: (SWANK-REPL::REPL-EVAL "(drakma:http-request \"http://localhost:8000/\") ..)
17: (SB-INT:SIMPLE-EVAL-IN-LEXENV (SWANK-REPL:LISTENER-EVAL "(drakma:http-request \"http://localhost:8000/\") ..)
18: (EVAL (SWANK-REPL:LISTENER-EVAL "(drakma:http-request \"http://localhost:8000/\") ..)
19: (SWANK:EVAL-FOR-EMACS (SWANK-REPL:LISTENER-EVAL "(drakma:http-request \"http://localhost:8000/\") ..)
20: (SWANK::PROCESS-REQUESTS NIL)
21: ((LAMBDA NIL :IN SWANK::HANDLE-REQUESTS))
22: ((LAMBDA NIL :IN SWANK::HANDLE-REQUESTS))
23: (SWANK/SBCL::CALL-WITH-BREAK-HOOK #<FUNCTION SWANK:SWANK-DEBUGGER-HOOK> #<CLOSURE (LAMBDA NIL :IN SWANK::HANDLE-REQUESTS) {1004CD008B}>)
24: ((FLET SWANK/BACKEND:CALL-WITH-DEBUGGER-HOOK :IN "/Users/ihar/.roswell/lisp/slime/2019.02.02/swank/sbcl.lisp") #<FUNCTION SWANK:SWANK-DEBUGGER-HOOK> #<CLOSURE (LAMBDA NIL :IN SWANK::HANDLE-REQUESTS) {..
25: (SWANK::CALL-WITH-BINDINGS ((*STANDARD-INPUT* . #<SWANK/GRAY::SLIME-INPUT-STREAM {1004BC9E93}>)) #<CLOSURE (LAMBDA NIL :IN SWANK::HANDLE-REQUESTS) {1004CD00AB}>)
26: (SWANK::HANDLE-REQUESTS #<SWANK::MULTITHREADED-CONNECTION {10079AA873}> NIL)
27: ((FLET SB-UNIX::BODY :IN SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE))
28: ((FLET "WITHOUT-INTERRUPTS-BODY-4" :IN SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE))
29: ((FLET SB-THREAD::WITH-MUTEX-THUNK :IN SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE))
30: ((FLET "WITHOUT-INTERRUPTS-BODY-1" :IN SB-THREAD::CALL-WITH-MUTEX))
31: (SB-THREAD::CALL-WITH-MUTEX #<CLOSURE (FLET SB-THREAD::WITH-MUTEX-THUNK :IN SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE) {3A67D6B}> #<SB-THREAD:MUTEX "thread result lock" owner: #<SB-THREAD:THREAD "..
32: (SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE #<SB-THREAD:THREAD "repl-thread" RUNNING {1004CC9B93}> NIL #<CLOSURE (LAMBDA NIL :IN SWANK-REPL::SPAWN-REPL-THREAD) {1004CC9B3B}> NIL)
33: ("foreign function: call_into_lisp")
34: ("foreign function: new_thread_trampoline")
35: ("foreign function: _pthread_body")
36: ("foreign function: _pthread_body")
37: ("foreign function: thread_start")
Interesting, if I change the URI to any other on the internet:
(drakma:http-request "https://stackoverflow.com")
-- then it works fine.
So the problem, probably, somewhere in the context of my local machine and local php-server. What could be wrong with these simple function calls?
My notes
in the backtrace I see this line
(USOCKET:SOCKET-CONNECT "localhost" 8000 :PROTOCOL :STREAM :ELEMENT-TYPE FLEXI-STREAMS:OCTET :TIMEOUT 20 :DEADLINE NIL :NODELAY :IF-SUPPORTED :LOCAL-HOST NIL :LOCAL-PORT NIL)
. The keys:local-host
and:local-port
are bothnil
. Probably that's the issue, because according to the usocket specs those params are responsible for callingbind()
on local address (is it somehow different than calling non-local address?).I also haven't found in the specs for
drakma:http-request
any special parameters to specify that I'm requesting a local server. According to the example, https://edicl.github.io/drakma/#ex-basic-auth, requesting any URI is simple and goes without any differentiation of 'local address' vs non-local.
Summing up
Why requesting "http://localhost:8000" doesn't work with
drakma
ordexador
. Does anybody can confirm the same behavior for local web servers?Is the
bind()
syscall somehow different for local and non-local addresses?
P.S. I already asked the similar question and first it seemed like the problem was with old software versions. Now I found additional details of the problem and rephrased it, so I'm making another question here.
Update 1
Maybe, the problem is connected to the particular PHP built-it webserver for development, because the issue is reproducible only with the PHP webserver + SBCL + Drakma. But PHP webserver serves fine for curl
, a Go client, a web browser.
PHP version:
PHP 7.3.1 (cli) (built: Jan 10 2019 13:16:34) ( NTS ) Copyright (c) 1997-2018 The PHP Group Zend Engine v3.3.1, Copyright (c) 1998-2018 Zend Technologies with Zend OPcache v7.3.1, Copyright (c) 1999-2018, by Zend Technologies
-- installed with brew install php
.
Steps to reproduce
The server:
php -S localhost:7070
Then try with clients:
curl "http://localhost:7070"
-- works fine (status code 404 is expected and received).
Lisp:
(drakma:http-request "http://localhost:7070")
-- fails (status code 404 is expected but connection refused
is returned).
Who wants details, there is a discussion where Stas Boukarev helped to debug the problem.
Running php -S localhost:7070
starts a server listening on ipv6 address on my computer, so requesting the ipv4 address 127.0.0.1:7070
doesn't work in that case.
So the server must be started with explicit ipv4 address php -S 127.0.0.1:7070
instead to work correctly.
这篇关于Drakma和Dexador都仅在请求localhost时在USocket调用上均失败,从而请求Internet正常的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!