- Bug report #1025986. When following a Location: with a custom Host: header

replacement, curl only replaced the Host: header on the initial request
  and didn't replace it on the following ones. This resulted in requests with
  two Host: headers.

  Now, curl checks if the location is on the same host as the initial request
  and then continues to replace the Host: header. And when it moves to another
  host, it doesn't replace the Host: header but it also doesn't make the
  second Host: header get used in the request.

  This change is verified by the two new test cases 184 and 185.

tests/data/Makefile.am

@@ -25,7 +25,8 @@ EXTRA_DIST = test1 test108 test117 test127 test20 test27 test34 test46	\
  test158 test159 test511 test160 test161 test162 test163 test164	\
  test512 test165 test166 test167 test168 test169 test170 test171	\
  test172 test204 test205 test173 test174 test175 test176 test177	\
- test513 test514 test178 test179 test180 test181 test182 test183
+ test513 test514 test178 test179 test180 test181 test182 test183	\
+ test184 test185
 
 # The following tests have been removed from the dist since they no longer
 # work. We need to fix the test suite's FTPS server first, then bring them

tests/data/test184

@@ -0,0 +1,67 @@
+# Server-side
+<reply>
+<data>
+HTTP/1.1 301 OK swsbounce
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 4
+Location: http://yet.another.host/184
+
+moo
+</data>
+<data1>
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 4
+
+moo
+</data1>
+<datacheck>
+HTTP/1.1 301 OK swsbounce
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 4
+Location: http://yet.another.host/184
+
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 4
+
+moo
+</datacheck>
+</reply>
+
+# Client-side
+<client>
+<server>
+http
+</server>
+<features>
+SSL
+</features>
+ <name>
+HTTP replace Host: when following Location: to new host
+ </name>
+ <command>
+http://deathstar.another.galaxy/184 -L -H "Host: another.visitor.stay.a.while.stay.foreeeeeever" --proxy http://%HOSTIP:%HTTPPORT
+</command>
+</test>
+
+# Verify data after the test has been "shot"
+<verify>
+<strip>
+^User-Agent: curl/.*
+</strip>
+<protocol>
+GET http://deathstar.another.galaxy/184 HTTP/1.1
+User-Agent: curl/7.12.2-CVS (i686-pc-linux-gnu) libcurl/7.12.2-CVS OpenSSL/0.9.6b zlib/1.1.4 libidn/0.4.6
+Pragma: no-cache
+Accept: */*
+Host: another.visitor.stay.a.while.stay.foreeeeeever
+
+GET http://yet.another.host/184 HTTP/1.1
+Host: yet.another.host
+Pragma: no-cache
+Accept: */*
+
+</protocol>
+
+</verify>

tests/data/test185

@@ -0,0 +1,67 @@
+# Server-side
+<reply>
+<data>
+HTTP/1.1 301 OK swsbounce
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 4
+Location: go/west/185
+
+moo
+</data>
+<data1>
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 4
+
+moo
+</data1>
+<datacheck>
+HTTP/1.1 301 OK swsbounce
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 4
+Location: go/west/185
+
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 4
+
+moo
+</datacheck>
+</reply>
+
+# Client-side
+<client>
+<server>
+http
+</server>
+<features>
+SSL
+</features>
+ <name>
+HTTP replace Host: when following Location: on the same host
+ </name>
+ <command>
+http://deathstar.another.galaxy/185 -L -H "Host: another.visitor.stay.a.while.stay.foreeeeeever" --proxy http://%HOSTIP:%HTTPPORT
+</command>
+</test>
+
+# Verify data after the test has been "shot"
+<verify>
+<strip>
+^User-Agent: curl/.*
+</strip>
+<protocol>
+GET http://deathstar.another.galaxy/185 HTTP/1.1
+User-Agent: curl/7.12.2-CVS (i686-pc-linux-gnu) libcurl/7.12.2-CVS OpenSSL/0.9.6b zlib/1.1.4 libidn/0.4.6
+Pragma: no-cache
+Accept: */*
+Host: another.visitor.stay.a.while.stay.foreeeeeever
+
+GET http://deathstar.another.galaxy/go/west/185 HTTP/1.1
+Pragma: no-cache
+Accept: */*
+Host: another.visitor.stay.a.while.stay.foreeeeeever
+
+</protocol>
+
+</verify>