added language and platform checks for recvfrom/sendto address castings

tests/shared_test/zts.tcpclient4.c

@@ -0,0 +1,66 @@
+// TCP Client test program
+
+#include <stdio.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+ 
+#include <cstdlib>
+#include "sdk.h"
+
+int atoi(const char *str);
+int close(int filedes);
+
+#define MSG_SZ 128
+
+int main(int argc , char *argv[])
+{
+    zts_init_rpc("/root/dev/ztest5","565799d8f612388c");
+
+    if(argc < 3) {
+        printf("usage: client <addr> <port>\n");
+        return 1;
+    }
+   
+    int sock, port = atoi(argv[2]);
+    struct sockaddr_in server;
+    char server_reply[MSG_SZ];
+     
+    sock = zts_socket(AF_INET , SOCK_STREAM , 0);
+    if (sock == -1) {
+        printf("could not create socket");
+    }     
+    server.sin_addr.s_addr = inet_addr(argv[1]);
+    server.sin_family = AF_INET;
+    server.sin_port = htons( port );
+ 
+    printf("connecting...\n");
+    if (zts_connect(sock , (struct sockaddr *)&server , sizeof(server)) < 0) {
+        perror("connect failed. Error");
+        return 1;
+    }
+    printf("connected\n");
+
+    char *msg = "welcome to the machine!";
+    
+    while(1)
+    {
+        // TX         
+        if(send(sock, msg, strlen(msg), 0) < 0) {
+            printf("send failed");
+            return 1;
+        }
+        else {
+            printf("TX: %s\n", msg);
+            printf("len = %ld\n", strlen(msg));
+
+            int bytes_read = read(sock, server_reply, MSG_SZ);
+            if(bytes_read < 0)
+                printf("\tRX: Nothing\n");
+            else
+                printf("\tRX = (%d bytes): %s\n", bytes_read, server_reply);
+        }
+    }
+    close(sock);
+    return 0;
+}

tests/shared_test/zts.tcpserver4.c

@@ -0,0 +1,65 @@
+// TCP Server test program
+
+#include <stdio.h>
+#include <string.h>
+#include <arpa/inet.h> 
+#include <unistd.h>
+  
+#include <cstdlib>
+#include "sdk.h"
+
+int atoi(const char *str);
+
+int main(int argc , char *argv[])
+{    
+    zts_init_rpc("/root/dev/ztest5","565799d8f612388c");
+    if(argc < 2) {
+       printf("usage: tcp_server <port>\n");
+       return 0;
+    }
+
+    int sock, client_sock, c, read_size, port = atoi(argv[1]);
+    char client_message[2000];
+ 
+    struct sockaddr_in servaddr;
+    struct sockaddr_in client;
+
+    sock = zts_socket(AF_INET, SOCK_STREAM, 0); 
+    bzero( &servaddr, sizeof(servaddr));
+ 
+    servaddr.sin_family = AF_INET;
+    servaddr.sin_addr.s_addr = htons(INADDR_ANY);
+    servaddr.sin_port = htons(port);
+    zts_bind(sock, (struct sockaddr *) &servaddr, sizeof(servaddr));
+
+    printf("listening\n");
+    zts_listen(sock , 3); 
+    printf("waiting to accept\n");
+    c = sizeof(struct sockaddr_in);
+    
+    client_sock = zts_accept(sock, (struct sockaddr *)&client, (socklen_t*)&c);
+    if (client_sock < 0) {
+        perror("accept failed");
+        return 0;
+    }
+    printf("connection accepted\n reading...\n");
+     
+    // RX
+
+    int msglen = 1024;
+    unsigned long count = 0;
+    while(1)
+    {
+        count++;
+       int bytes_read = read(client_sock, client_message, msglen);
+       printf("[%lu] RX = (%d): ", count, bytes_read);
+       for(int i=0; i<bytes_read; i++) {
+          printf("%c", client_message[i]);
+       }
+
+       // TX
+       int bytes_written = write(client_sock, "Server here!", 12); 
+       printf("\t\nTX = %d\n", bytes_written);
+    }
+    return 0;
+}