fixed send(from) recv(from) bug, added dgramrcv.c

[my-code/ivac.git] / stream.c

diff --git a/stream.c b/stream.c
index b3527ab..834bf47 100644 (file)
--- a/stream.c
+++ b/stream.c
@@ -20,10 +20,16 @@
 /* inet_ntoa ... */
 #include <arpa/inet.h>
 
+/* errno stuff ... */
+#include <errno.h>
+
+/* read, close */
+#include <unistd.h>
 
 int main(int argc, char *argv[]) {
   int listen_fd, send_fd;
-  struct sockaddr_in local_addr, *remote_addr;
+  struct sockaddr_in local_addr, remote_addr;
+  socklen_t remote_addr_len;
   int send_bytes, read_bytes;
 
   if(argc!=2) {
@@ -31,18 +37,19 @@ int main(int argc, char *argv[]) {
     exit(1);
   }
 
-  if(listen_fd=socket(AF_INET,SOCK_STREAM,0) == -1) {
+  if((listen_fd=socket(AF_INET,SOCK_STREAM,0)) == -1) {
     printf("can't open socket.\n");
     exit(1);
   }
-  
+ 
+  memset(&local_addr,0,sizeof(local_addr));
   local_addr.sin_family=AF_INET;
   local_addr.sin_port=htons(atoi(argv[1]));
   local_addr.sin_addr.s_addr=htonl(INADDR_ANY);
-  memset(&(local_addr.sin_zero),'\0',8);
 
-  if(bind(listen_fd,(struct sockaddr)&local_addr,sizeof(struct sockaddr))==-1) {
+  if(bind(listen_fd,(struct sockaddr *)&local_addr,sizeof(local_addr))==-1) {
     printf("unable to bind on port %d.\n",atoi(argv[1]));
+    perror("bind");
     exit(1);
   }
 
@@ -51,22 +58,24 @@ int main(int argc, char *argv[]) {
     exit(1);
   }
 
-  if(send_fd=accept(listen_fd,(struct sockaddr *)remote_addr,
-  sizeof(struct sockaddr_in)) {
+  remote_addr_len=sizeof(remote_addr); 
+  if((send_fd=accept(listen_fd,(struct sockaddr *)&remote_addr,
+  &remote_addr_len))!=-1) {
     printf("accepting connection from %s port %d.\n",
-    inet_ntoa(remote_addr->sin_addr.s_addr),
-    ntohs(remote_addr->sin_port));
+    inet_ntoa(remote_addr.sin_addr),
+    ntohs(remote_addr.sin_port));
 
       /* send stuff .... */
       read_bytes=1;
       while(read_bytes>0) {
-       char buf[1000];
-       read_bytes=read(stdin,(void *)buf,sizeof(buf));
-        send_bytes=send(send_fd,buf,sizeof(buf),0);
+       unsigned char buf[1000];
+       read_bytes=read(0,buf,sizeof(buf));
+        send_bytes=send(send_fd,buf,read_bytes,0);
       }
 
       close(send_fd);
       printf("connection closed ...\n");
-      prinrf("%d from %d total bytes sent.\n",send_bytes,read_bytes);
-      return 0;
+      printf("%d from %d total bytes sent.\n",send_bytes,read_bytes);
+  }
+  return 0;
 }