Exclude UDP code for now

src/core/iomgr/udp_server.c

@@ -38,6 +38,7 @@
 
 #include <grpc/support/port_platform.h>
 
+#ifdef GRPC_NEED_UDP
 #ifdef GPR_POSIX_SOCKET
 
 #include "src/core/iomgr/udp_server.h"
@@ -435,3 +436,4 @@ void grpc_udp_server_write(server_port *sp, const char *buffer, size_t buf_len,
 }
 
 #endif
+#endif

test/core/iomgr/udp_server_test.c

@@ -43,6 +43,8 @@
 #include <string.h>
 #include <unistd.h>
 
+#ifdef GRPC_NEED_UDP
+
 #define LOG_TEST(x) gpr_log(GPR_INFO, "%s", #x)
 
 static grpc_pollset g_pollset;
@@ -195,3 +197,9 @@ int main(int argc, char **argv) {
   grpc_iomgr_shutdown();
   return 0;
 }
+
+#else
+
+int main(int argc, char **argv) { return 0; }
+
+#endif