Added select_test() function to allow selecting on no sockets on

Winsock.

tests/libtest/first.c

@@ -9,6 +9,21 @@ extern void curl_memlimit(int);
 /* test is provided in the test code file */
 int test(char *url);
 
+int select_test (int num_fds, fd_set *rd, fd_set *wr, fd_set *exc,
+                 struct timeval *tv)
+{
+#ifdef WIN32
+  /* Winsock doesn't like no socket set in 'rd', 'wr' or 'exc'. This is
+   * case when 'num_fds <= 0. So sleep.
+   */
+  if (num_fds <= 0) {
+    Sleep(1000*tv->tv_sec + tv->tv_usec/1000);
+    return 0;
+  }
+#endif
+  return select(num_fds, rd, wr, exc, tv);
+}
+
 char *arg2=NULL;
 
 int main(int argc, char **argv)

tests/libtest/lib503.c

@@ -67,7 +67,7 @@ int test(char *URL)
         return 89;
       }
 
-      if (select(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
+      if (select_test(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
         fprintf(stderr, "bad select??\n");
         return 95;
       }

tests/libtest/lib504.c

@@ -77,7 +77,7 @@ int test(char *URL)
         ret = 3;
         break;
       }
-      rc = select(max_fd+1, &rd, &wr, &exc, &interval);
+      rc = select_test(max_fd+1, &rd, &wr, &exc, &interval);
       fprintf(stderr, "select returned %d\n", rc);
 
       /* we only allow a certain number of loops to avoid hanging here

tests/libtest/lib507.c

@@ -28,7 +28,7 @@ int test(char *URL)
     timeout.tv_sec = 1;
     timeout.tv_usec = 0;
     curl_multi_fdset(multi, &fdread, &fdwrite, &fdexcep, &maxfd);
-    rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+    rc = select_test(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
     switch(rc) {
       case -1:
         break;

tests/libtest/lib509.c

@@ -241,7 +241,7 @@ int test(char *URL)
         break;
       }
 
-      if (select(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
+      if (select_test(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
         fprintf(stderr, "bad select??\n");
         i =95;
         break;

tests/libtest/lib525.c

@@ -114,7 +114,7 @@ int test(char *URL)
       break;
     }
 
-    if (select(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
+    if (select_test(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
       fprintf(stderr, "bad select??\n");
       res = 195;
       break;

tests/libtest/lib526.c

@@ -106,7 +106,7 @@ int test(char *URL)
       break;
     }
 
-    if (select(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
+    if (select_test(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
       fprintf(stderr, "bad select??\n");
       res = 195;
       break;

tests/libtest/lib530.c

@@ -83,7 +83,7 @@ int test(char *URL)
       break;
     }
 
-    if (select(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
+    if (select_test(max_fd+1, &rd, &wr, &exc, &interval) == -1) {
       fprintf(stderr, "bad select??\n");
       res = 195;
       break;

tests/libtest/test.h

@@ -32,5 +32,9 @@
 #endif
 
 extern char *arg2; /* set by first.c to the argv[2] or NULL */
+
+int select_test (int num_fds, fd_set *rd, fd_set *wr, fd_set *exc,
+                 struct timeval *tv);
+
 int test(char *URL); /* the actual test function provided by each individual
                         libXXX.c file */