easy: Fix the broken CURLOPT_MAXCONNECTS option

Copy the CURLOPT_MAXCONNECTS option to CURLMOPT_MAXCONNECTS in
curl_easy_perform().

Bug: http://curl.haxx.se/bug/view.cgi?id=1212
Reported-by: Steven Gu

lib/easy.c

@@ -442,6 +442,9 @@ CURLcode curl_easy_perform(CURL *easy)
     data->multi_easy = multi;
   }
 
+  /* Copy the MAXCONNECTS option to the multi handle */
+  curl_multi_setopt(multi, CURLMOPT_MAXCONNECTS, data->set.maxconnects);
+
   mcode = curl_multi_add_handle(multi, easy);
   if(mcode) {
     curl_multi_cleanup(multi);

tests/data/Makefile.am

@@ -109,7 +109,7 @@ test1400 test1401 test1402 test1403 test1404 test1405 test1406 test1407 \
 test1408 test1409 test1410 test1411 test1412 test1413 \
 \
 test1500 test1501 test1502 test1503 test1504 test1505 test1506 test1507 \
-test1508 test1509 \
+test1508 test1509 test1510 \
 \
 test1900 test1901 test1902 test1903 \
 \

tests/data/test1510

@@ -0,0 +1,94 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+</keywords>
+</info>
+
+# Server-side
+<reply>
+<data1>
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 47
+
+file contents should appear once for each file
+</data1>
+<data2>
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 47
+
+file contents should appear once for each file
+</data2>
+<data3>
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 47
+
+file contents should appear once for each file
+</data3>
+<data4>
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 47
+
+file contents should appear once for each file
+</data4>
+</reply>
+
+# Client-side
+<client>
+<server>
+http
+</server>
+<tool>
+lib1510
+</tool>
+ <name>
+HTTP GET connection cache limit (CURLOPT_MAXCONNECTS)
+ </name>
+ <command>
+http://%HOSTIP:%HTTPPORT/path/1510 %HOSTIP %HTTPPORT
+</command>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+GET /path/15100001 HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+
+GET /path/15100002 HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+
+GET /path/15100003 HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+
+GET /path/15100004 HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+
+</protocol>
+<strip>
+^Host:.*
+</strip>
+<file name="log/stderr1510" mode="text">
+* Connection #0 to host server1.example.com left intact
+* Connection #1 to host server2.example.com left intact
+* Connection #2 to host server3.example.com left intact
+* Closing connection 0
+* Connection #3 to host server4.example.com left intact
+</file>
+<stripfile>
+$_ = '' if (($_ !~ /left intact/) && ($_ !~ /Closing connection/))
+</stripfile>
+</verify>
+</testcase>

tests/libtest/Makefile.inc

@@ -21,7 +21,7 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect                \
  lib571 lib572 lib573 lib574 lib575 lib576        lib578 lib579 lib582   \
  lib583 lib585 lib586 lib587        lib590 lib591 lib597 lib598 lib599   \
  lib1500 lib1501 lib1502 lib1503 lib1504 lib1505 lib1506 lib1507 lib1508 \
- lib1509 \
+ lib1509 lib1510 \
  lib1900 \
  lib2033
 
@@ -331,6 +331,10 @@ lib1509_SOURCES = lib1509.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib1509_LDADD = $(TESTUTIL_LIBS)
 lib1509_CPPFLAGS = $(AM_CPPFLAGS) -DLIB1509
 
+lib1510_SOURCES = lib1510.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
+lib1510_LDADD = $(TESTUTIL_LIBS)
+lib1510_CPPFLAGS = $(AM_CPPFLAGS) -DLIB1510
+
 lib1900_SOURCES = lib1900.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib1900_CPPFLAGS = $(AM_CPPFLAGS)
 

tests/libtest/lib1510.c

@@ -0,0 +1,92 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2013, Linus Nielsen Feltzing <linus@haxx.se>
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include "test.h"
+
+#include "testutil.h"
+#include "warnless.h"
+#include "memdebug.h"
+
+#define TEST_HANG_TIMEOUT 60 * 1000
+
+#define NUM_URLS 4
+
+int test(char *URL)
+{
+  int res = 0;
+  CURL *curl = NULL;
+  int i;
+  char target_url[256];
+  char dnsentry[256];
+  struct curl_slist *slist = NULL;
+  char *port = libtest_arg3;
+  char *address = libtest_arg2;
+
+  (void)URL;
+
+  /* Create fake DNS entries for serverX.example.com for all handles */
+  for(i=0; i < NUM_URLS; i++) {
+    sprintf(dnsentry, "server%d.example.com:%s:%s", i + 1, port, address);
+    printf("%s\n", dnsentry);
+    slist = curl_slist_append(slist, dnsentry);
+  }
+
+  start_test_timing();
+
+  global_init(CURL_GLOBAL_ALL);
+
+  /* get an easy handle */
+  easy_init(curl);
+
+  /* go verbose */
+  easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+  /* include headers */
+  easy_setopt(curl, CURLOPT_HEADER, 1L);
+
+  easy_setopt(curl, CURLOPT_RESOLVE, slist);
+
+  easy_setopt(curl, CURLOPT_MAXCONNECTS, 3);
+
+  /* get NUM_HANDLES easy handles */
+  for(i=0; i < NUM_URLS; i++) {
+    /* specify target */
+    sprintf(target_url, "http://server%d.example.com:%s/path/1510%04i",
+            i + 1, port, i + 1);
+    target_url[sizeof(target_url) - 1] = '\0';
+    easy_setopt(curl, CURLOPT_URL, target_url);
+
+    res = curl_easy_perform(curl);
+
+    abort_on_test_timeout();
+  }
+
+test_cleanup:
+
+  /* proper cleanup sequence - type PB */
+
+  curl_easy_cleanup(curl);
+
+  curl_slist_free_all(slist);
+
+  curl_global_cleanup();
+
+  return res;
+}