适配不同芯片：不同平台recv实现不同，可能存在单次recv数据不完全的情况

communication_lite/lwip_hal/src/lwip_func_test.c

@@ -139,9 +139,18 @@ static void SampleTcpServerTask(void)
 
     waitServer();
     memset_s(buf, BUF_SIZE, 0, BUF_SIZE);
-    ret = recv(sfd, buf, sizeof(buf), 0);
-    printf("[tcp server]recv, ret=%d\n", ret);
-    TEST_ASSERT_EQUAL_INT(ret, len * strlen(CLI_MSG));
+    int recvSum = 0;
+    int recvTimes = 50;
+    while (recvTimes > 0) {
+        ret = recv(clientFd, buf, sizeof(buf), 0);
+        recvSum += ret;
+        if (recvSum == (len * strlen(SRV_MSG)) || ret <= 0) {
+            break;
+        }
+        recvTimes--;
+    }
+    printf("[tcp server]recv, recvSum=%d,recvTimes=%d\n", recvSum, recvTimes);
+    TEST_ASSERT_EQUAL_INT(len * strlen(CLI_MSG), recvSum);
 
     ret = shutdown(sfd, SHUT_RDWR);
     printf("[tcp server]shutdown, ret=%d\n", ret);
@@ -226,9 +235,18 @@ static void SampleTcpClientTask(void)
 
     waitClient();
     memset_s(buf, BUF_SIZE, 0, BUF_SIZE);
-    ret = recv(sfd, buf, sizeof(buf), 0);
-    printf("[tcp client]recv, ret=%d\n", ret);
-    TEST_ASSERT_EQUAL_INT(ret, len * strlen(SRV_MSG));
+    int recvSum = 0;
+    int recvTimes = 50;
+    while (recvTimes > 0) {
+        ret = recv(clientFd, buf, sizeof(buf), 0);
+        recvSum += ret;
+        if (recvSum == (len * strlen(SRV_MSG)) || ret <= 0) {
+            break;
+        }
+        recvTimes--;
+    }
+    printf("[tcp client]recv, recvSum=%d,recvTimes=%d\n", recvSum, recvTimes);
+    TEST_ASSERT_EQUAL_INT(len * strlen(SRV_MSG), recvSum);
 
     ret = shutdown(sfd, SHUT_RDWR);
     printf("[tcp client]shutdown, ret=%d\n", ret);