From 6c316d204f7c2f07f6e9c21e554d1be8991bad2d Mon Sep 17 00:00:00 2001
From: Zimeng Pan <zmpan@umich.edu>
Date: Mon, 12 Aug 2019 23:40:12 -0700
Subject: [PATCH] temporary fix for WSLv1

---
 src/util/src/tsocket.c | 31 ++++++++++++++++++++++++++++---
 1 file changed, 28 insertions(+), 3 deletions(-)

diff --git a/src/util/src/tsocket.c b/src/util/src/tsocket.c
index a7fd6de844..fe7233feec 100644
--- a/src/util/src/tsocket.c
+++ b/src/util/src/tsocket.c
@@ -23,14 +23,17 @@
 #include <pthread.h>
 #include <stdarg.h>
 #include <sys/types.h>
+#include <sys/utsname.h>
 
 #include "os.h"
 #include "tglobalcfg.h"
 #include "tlog.h"
 #include "tsocket.h"
 #include "tutil.h"
+#include "tsystem.h"
 
 unsigned int ip2uint(const char *const ip_addr);
+bool isRunningWSLv1();
 
 /*
  * Function to get the public ip address of current machine. If get IP
@@ -301,9 +304,15 @@ int taosOpenUdpSocket(char *ip, short port) {
 
   nocheck = 1;
   if (taosSetSockOpt(sockFd, SOL_SOCKET, SO_NO_CHECK, (void *)&nocheck, sizeof(nocheck)) < 0) {
-    pError("setsockopt SO_NO_CHECK failed: %d (%s)", errno, strerror(errno));
-    close(sockFd);
-    return -1;
+    // no_check is not implemented in WSL
+    // skip the following check if system running WSLv1
+    if (!isRunningWSLv1()) {
+      pError("setsockopt SO_NO_CHECK failed: %d (%s)", errno, strerror(errno));
+      close(sockFd);
+      return -1;
+    } else {
+      pError("Skipping: setsockopt SO_NO_CHECK failed: %d (%s)", errno, strerror(errno));
+    }
   }
 
   ttl = 128;
@@ -547,3 +556,19 @@ int taosCopyFds(int sfd, int dfd, int64_t len) {
 
   return 0;
 }
+
+// check if the linux running is WSL
+bool isRunningWSLv1() {
+  struct utsname buf;
+  if (uname(&buf)) {
+    pPrint(" can't fetch os info");
+    return false;
+  }
+
+  if (strstr(buf.release, "Microsoft") != 0) {
+    pPrint(" using WSLv1");
+    return true;
+  }
+
+  return false;
+}
\ No newline at end of file
-- 
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