proxy: chunked response, error code

Add test1715 to check proper handling of chunked transfer
encoding in CONNECT responses. Change proxy error code from
56 (RECV_ERROR) for everything to 7 (COULDNT_CONNECT) when
the server response could be read successfully, but establishing
the connection is not possible (http status code wrong).

Adapt several test expectations from 56 to 7.

Closes #21084

tests/data/Makefile.am

@@ -229,7 +229,7 @@ test1670 test1671 test1672 test1673 \
 test1680 test1681 test1682 test1683 test1684 \
 \
 test1700 test1701 test1702 test1703 test1704 test1705 test1706 test1707 \
-test1708 test1709 test1710 test1711 test1712 test1713 test1714 \
+test1708 test1709 test1710 test1711 test1712 test1713 test1714 test1715 \
 \
 test1800 test1801 test1802 test1847 test1848 test1849 test1850 test1851 \
 \

tests/data/test1059

@@ -42,7 +42,7 @@ ftp://test-number:%TESTNUMBER/wanted/page -p -x %HOSTIP:%HTTPPORT
 <verify>
 # The server does not implement CONNECT for ftp, so this must be a failure test
 <errorcode>
-56
+7
 </errorcode>
 <protocol crlf="headers">
 CONNECT test-number:%TESTNUMBER HTTP/1.1

tests/data/test1715

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="US-ASCII"?>
+<testcase>
+<info>
+<keywords>
+HTTP
+HTTP GET
+HTTP CONNECT
+HTTP proxy
+proxytunnel
+</keywords>
+</info>
+
+<reply>
+
+<connect crlf="headers">
+HTTP/1.1 407 Proxy Authentication Required
+Proxy-Authenticate: Special realm="none", nonce="abc123"
+Content-Length: 13
+Transfer-Encoding: chunked
+Magic-special: true
+
+some content
+</connect>
+</reply>
+
+<client>
+<server>
+http
+</server>
+<features>
+proxy
+</features>
+<name>
+HTTP CONNECT with proxy returning Content-Length and chunked
+</name>
+<command>
+http://test.example --proxy http://%HOSTIP:%HTTPPORT --proxytunnel -sS
+</command>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+<protocol crlf="headers">
+CONNECT test.example:80 HTTP/1.1
+Host: test.example:80
+User-Agent: curl/%VERSION
+Proxy-Connection: Keep-Alive
+
+</protocol>
+<errorcode>
+56
+</errorcode>
+</verify>
+</testcase>

tests/data/test217

@@ -49,9 +49,9 @@ User-Agent: curl/%VERSION
 Proxy-Connection: Keep-Alive
 
 </protocol>
-# CURLE_RECV_ERROR
+# CURLE_COULDNT_CONNECT
 <errorcode>
-56
+7
 </errorcode>
 <stdout crlf="headers">
 HTTP/1.1 405 Method Not Allowed swsclose

tests/data/test287

@@ -45,9 +45,9 @@ Proxy-Connection: Keep-Alive
 User-Agent: looser/2007
 
 </protocol>
-# CURLE_RECV_ERROR
+# CURLE_COULDNT_CONNECT
 <errorcode>
-56
+7
 </errorcode>
 <stdout crlf="headers">
 HTTP/1.1 405 Method Not Allowed swsclose

tests/data/test302

@@ -41,7 +41,7 @@ HTTPS GET over HTTP proxy fails
 # Verify data after the test has been "shot"
 <verify>
 <errorcode>
-56
+7
 </errorcode>
 <data>
 </data>

tests/data/test440

@@ -72,7 +72,7 @@ https://this.hsts.example./%TESTNUMBER
 </stdout>
 # Proxy CONNECT aborted
 <errorcode>
-56
+7
 </errorcode>
 <limits>
 Allocations: 160

tests/data/test441

@@ -71,7 +71,7 @@ https://this.hsts.example/%TESTNUMBER
 </stdout>
 # Proxy CONNECT aborted
 <errorcode>
-56
+7
 </errorcode>
 </verify>
 </testcase>

tests/data/test493

@@ -70,7 +70,7 @@ https://this.hsts.example/%TESTNUMBER
 </stdout>
 # Proxy CONNECT aborted
 <errorcode>
-56
+7
 </errorcode>
 </verify>
 </testcase>

tests/data/test718

@@ -56,7 +56,7 @@ Proxy-Connection: Keep-Alive
 
 </protocol>
 <errorcode>
-56
+7
 </errorcode>
 </verify>
 </testcase>

tests/data/test749

@@ -53,10 +53,10 @@ Proxy-Connection: Keep-Alive
 
 </protocol>
 <errorcode>
-56
+7
 </errorcode>
 <stderr mode="text">
-curl: (56) CONNECT tunnel failed, response 400
+curl: (7) CONNECT tunnel failed, response 400
 </stderr>
 </verify>
 </testcase>

tests/data/test94

@@ -41,7 +41,7 @@ https://test.anything.really.com:%TESTNUMBER --proxy1.0 %HOSTIP:%HTTPPORT
 # Verify data after the test has been "shot"
 <verify>
 <errorcode>
-56
+7
 </errorcode>
 <protocol crlf="headers">
 CONNECT test.anything.really.com:%TESTNUMBER HTTP/1.0