picotcp/lwip ipv4/ipv6 fully functional, needs stress testing

tests/api_test/tcpserver4.c

@@ -11,13 +11,11 @@ int atoi(const char *str);
 int main(int argc , char *argv[])
 {
     if(argc < 2) {
-       printf("usage: tcp_server <4/6> <port>\n");
-       printf("\t - where 4/6 represent IP version\n");
+       printf("usage: tcp_server <port>\n");
        return 0;
     }
-   
 
-    int sock, client_sock, c, read_size, ipv = atoi(argv[1]), port = atoi(argv[2]);
+    int sock, client_sock, c, read_size, port = atoi(argv[1]);
     char client_message[2000];
      
     char str[100];

tests/api_test/udpclient4.c

@@ -0,0 +1,92 @@
+/* 
+ * udpclient.c - A simple UDP client
+ * usage: udpclient <host> <port>
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h> 
+#include <fcntl.h>
+
+#define BUFSIZE 1024
+
+/* 
+ * error - wrapper for perror
+ */
+void error(char *msg) {
+    perror(msg);
+    exit(0);
+}
+
+int main(int argc, char **argv) {
+    int sockfd, portno, n;
+    int serverlen;
+    struct sockaddr_in serveraddr;
+    struct hostent *server;
+    char *hostname;
+    char buf[BUFSIZE];
+
+    /* check command line arguments */
+    if (argc != 3) {
+       fprintf(stderr,"usage: %s <hostname> <port>\n", argv[0]);
+       exit(0);
+    }
+    hostname = argv[1];
+    portno = atoi(argv[2]);
+
+    /* socket: create the socket */
+    sockfd = socket(AF_INET, SOCK_DGRAM, 0);
+    if (sockfd < 0) 
+        error("ERROR opening socket");
+
+    /* gethostbyname: get the server's DNS entry */
+    server = gethostbyname(hostname);
+    if (server == NULL) {
+        fprintf(stderr,"ERROR, no such host as %s\n", hostname);
+        exit(0);
+    }
+
+    /* build the server's Internet address */
+    bzero((char *) &serveraddr, sizeof(serveraddr));
+    serveraddr.sin_family = AF_INET;
+    bcopy((char *)server->h_addr, 
+      (char *)&serveraddr.sin_addr.s_addr, server->h_length);
+    serveraddr.sin_port = htons(portno);
+
+    /* get a message from the user */
+    char *msg = "A message to the server!\0";
+    fcntl(sockfd, F_SETFL, O_NONBLOCK); 
+    long count = 0;
+    while(1)
+    {
+        count++;
+        printf("\nTX(%lu)...\n", count);
+        usleep(10000);
+        //bzero(buf, BUFSIZE);
+        //printf("\nPlease enter msg: ");
+        //fgets(buf, BUFSIZE, stdin);
+
+        /* send the message to the server */
+        serverlen = sizeof(serveraddr);
+        printf("A\n");
+        n = sendto(sockfd, msg, strlen(msg), 0, (struct sockaddr *)&serveraddr, serverlen);
+        printf("B\n");
+        //if (n < 0) 
+        //    error("ERROR in sendto");
+        
+        /* print the server's reply */
+        printf("C\n");
+        memset(buf, 0, sizeof(buf));
+        printf("D\n");
+        n = recvfrom(sockfd, buf, BUFSIZE, 0, (struct sockaddr *)&serveraddr, (socklen_t *)&serverlen);
+        printf("E\n");
+        //if (n < 0) 
+        //    printf("ERROR in recvfrom: %d", n);
+        printf("Echo from server: %s", buf);
+    }
+    return 0;
+}

tests/api_test/udpserver.c

@@ -0,0 +1,83 @@
+// UDP Server test program
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h> 
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#define MAXBUF 1024*1024
+
+void echo( int sd ) {
+  char bufin[MAXBUF];
+  struct sockaddr_in remote;
+  int n;
+  socklen_t len = sizeof(remote);
+  long count = 0;
+
+  while (1) {
+    usleep(50);
+    count++;
+    // read a datagram from the socket (put result in bufin)
+    n=recvfrom(sd,bufin,MAXBUF,0,(struct sockaddr *)&remote,&len);
+    // print out the address of the sender
+    printf("DGRAM from %s:%d\n", inet_ntoa(remote.sin_addr), ntohs(remote.sin_port));
+
+    if (n<0) {
+      perror("Error receiving data");
+    } else {
+      printf("GOT %d BYTES (count = %ld)\n", n, count);
+      // Got something, just send it back
+      // sendto(sd,bufin,n,0,(struct sockaddr *)&remote,len);
+    }
+  }
+}
+
+int main(int argc, char *argv[]) {
+
+  if(argc < 2) {
+    printf("usage: udp_server <port>\n");
+    return 0;
+  }
+  int ld, port = atoi(argv[1]);
+  socklen_t len;
+  struct sockaddr_in skaddr;
+  struct sockaddr_in skaddr2;
+
+  // Create socket
+  if ((ld = socket( PF_INET, SOCK_DGRAM, 0)) < 0) {
+    printf("error creating socket\n");
+    return 0;
+  }
+  // Create address
+  skaddr.sin_family = AF_INET;
+  skaddr.sin_addr.s_addr = htonl(INADDR_ANY);
+  skaddr.sin_port = htons(port);
+  // Bind to address
+  if (bind(ld, (struct sockaddr *) &skaddr, sizeof(skaddr))<0) {
+    printf("error binding\n");
+    return 0;
+  }
+  // find out what port we were assigned
+  len = sizeof( skaddr2 );
+  if (getsockname(ld, (struct sockaddr *) &skaddr2, &len)<0) {
+    printf("error getsockname\n");
+    return 0;
+  }
+  // Display address:port to verify it was sent over RPC correctly
+  port = ntohs(skaddr2.sin_port);
+  int ip = skaddr2.sin_addr.s_addr;
+  unsigned char d[4];
+  d[0] = ip & 0xFF;
+  d[1] = (ip >>  8) & 0xFF;
+  d[2] = (ip >> 16) & 0xFF;
+  d[3] = (ip >> 24) & 0xFF;
+  printf("bound to address: %d.%d.%d.%d : %d\n", d[0],d[1],d[2],d[3], port);
+          
+  // RX
+  echo(ld);
+  return(0);
+}