changed code for Select API
This commit is contained in:
kaustubhprabhu
parent
ff5411c68d
commit
4bd06c53f0
332
src/main.c
332
src/main.c
@ -2,7 +2,7 @@
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* iperfjd -- greatly simplified version of iperf with the same interface
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* semantics
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*
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* jdugan -- 24 Jan 2009
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* kprabhu - 29th May 2009
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*
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*/
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@ -43,6 +43,7 @@ enum {
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uS_TO_NS = 1000,
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MAX_BUFFER_SIZE =10,
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DEFAULT_UDP_BUFSIZE = 1470,
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DEFAULT_TCP_BUFSIZE = 8192
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};
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@ -71,6 +72,7 @@ struct iperf_stream
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struct iperf_stream *next;
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};
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// Run routines for TCP and UDP- will be called by pthread_create() indirectly
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void *udp_client_thread(struct iperf_stream *sp);
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void *udp_server_thread(struct iperf_stream *sp);
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void *tcp_client_thread(struct iperf_stream *sp);
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@ -124,6 +126,30 @@ default_settings(struct iperf_settings *settings)
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struct iperf_stream *streams; /* head of list of streams */
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int done = 0;
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/*--------------------------------------------------------
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* Displays the current list of streams
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-------------------------------------------------------*/
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void Display()
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{
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struct iperf_stream * n;
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n= streams;
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int count=1;
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while(n->next!=NULL)
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{
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printf("position-%d\tsp=%d\tsocket=%d\n",count++,(int)n,n->sock);
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n=n->next;
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}
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}
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/*--------------------------------------------------------
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* sets the parameters for the new stream created
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-------------------------------------------------------*/
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struct iperf_stream *
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new_stream(int s, struct iperf_settings *settings)
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{
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@ -136,35 +162,41 @@ new_stream(int s, struct iperf_settings *settings)
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return(NULL);
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}
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//initialise sp with 0
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memset(sp, 0, sizeof(struct iperf_stream));
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// copy settings and passed socket into stream
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sp->settings = settings;
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sp->sock = s;
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len = sizeof sp->local;
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if(getsockname(sp->sock, (struct sockaddr *) &sp->local, &len) < 0) {
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perror("getsockname");
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free(sp);
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return(NULL);
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}
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//converts the local ip into string address
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if(inet_ntop(AF_INET, (void *) &sp->local.sin_addr,
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(void *) &sp->local_addr, 512) == NULL) {
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perror("inet_pton");
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}
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//stores the socket id.
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if(getpeername(sp->sock, (struct sockaddr *) &sp->peer, &len) < 0) {
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perror("getpeername");
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free(sp);
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return(NULL);
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}
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// converts the remote ip into string address
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if(inet_ntop(AF_INET, (void *) &sp->peer.sin_addr,
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(void *) &sp->peer_addr, 512) == NULL) {
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perror("inet_pton");
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}
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// sets appropriate function pointer
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switch (settings->proto) {
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case Ptcp:
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sp->client = (void *) tcp_client_thread;
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@ -199,6 +231,11 @@ new_stream(int s, struct iperf_settings *settings)
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return(sp);
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}
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/*--------------------------------------------------------
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* add a stream into stream_list linked list
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-------------------------------------------------------*/
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void
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add_stream(struct iperf_stream *sp)
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{
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@ -214,12 +251,75 @@ add_stream(struct iperf_stream *sp)
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}
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}
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void
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/*--------------------------------------------------------
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* delete the stream
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-------------------------------------------------------*/
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int
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free_stream(struct iperf_stream *sp)
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{
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free(sp);
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printf("I am in free_stream \n");
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struct iperf_stream *prev,*start;
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prev = streams;
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start = streams;
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if(streams->sock==sp->sock)
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{
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printf("in 1 -Deleted\n\n\n");
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streams=streams->next;
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return 0;
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}
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else
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{
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do
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{
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start= streams->next;
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if(start->sock==sp->sock)
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{
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printf("Deleting socket %d \t",sp->sock);
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prev->next = sp->next;
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printf("Deleted\n\n\n");
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free(sp);
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return 0;
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}
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prev=prev->next;
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}while(start->next!=NULL);
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return -1;
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}
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}
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/*--------------------------------------------------------
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* update the stream
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-------------------------------------------------------*/
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struct iperf_stream *
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find_update_stream(int j, int result)
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{
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struct iperf_stream *n;
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n=streams;
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//find the correct stream for update
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do
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{
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if(n->sock==j)
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{
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n->bytes_in+= result; //update the byte count
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break;
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}
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n = n->next;
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}while(n->next!=NULL);
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return n;
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}
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/*--------------------------------------------------------
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* Display connected message
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-------------------------------------------------------*/
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void connect_msg(struct iperf_stream *sp)
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{
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char *ipl, *ipr;
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@ -233,6 +333,10 @@ void connect_msg(struct iperf_stream *sp)
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sp->peer_addr, htons(sp->peer.sin_port));
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}
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/*--------------------------------------------------------
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* UDP client functionality.
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-------------------------------------------------------*/
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void *
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udp_client_thread(struct iperf_stream *sp)
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{
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@ -296,6 +400,10 @@ udp_client_thread(struct iperf_stream *sp)
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pthread_exit(NULL);
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}
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/*--------------------------------------------------------
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* UDP Server functionality.
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-------------------------------------------------------*/
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void *
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udp_server_thread(struct iperf_stream *sp)
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{
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@ -318,16 +426,30 @@ udp_server_thread(struct iperf_stream *sp)
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pthread_exit(NULL);
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}
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/*--------------------------------------------------------
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* UDP Reporting routine
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-------------------------------------------------------*/
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void
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udp_report(int final)
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{
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}
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/*--------------------------------------------------------
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* UDP Reporting routine
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-------------------------------------------------------*/
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void
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tcp_report(int final)
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{
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}
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/*--------------------------------------------------------
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* TCP client functionality
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* -------------------------------------------------------*/
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void *
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tcp_client_thread(struct iperf_stream *sp)
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{
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@ -361,6 +483,9 @@ tcp_client_thread(struct iperf_stream *sp)
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pthread_exit(NULL);
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}
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/*--------------------------------------------------------
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* TCP Server functionality
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* -------------------------------------------------------*/
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void *
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tcp_server_thread(struct iperf_stream *sp)
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{
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@ -385,6 +510,10 @@ tcp_server_thread(struct iperf_stream *sp)
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pthread_exit(NULL);
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}
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/*--------------------------------------------------------
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* This is code for Client
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* -------------------------------------------------------*/
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int
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client(struct iperf_settings *settings)
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{
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@ -407,14 +536,18 @@ client(struct iperf_settings *settings)
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sp = new_stream(s, settings);
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add_stream(sp);
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connect_msg(sp);
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// need to replace this with Select
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pthread_create(&sp->thread, NULL, sp->client, (void *) sp);
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}
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timer = new_timer(settings->duration, 0);
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// wait till the timer expires
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while(!timer->expired(timer))
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sleep(settings->duration);
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// this is checked in UDP/TCP while loop
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// to stop sending packets. Global member
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done = 1;
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/* XXX: report */
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@ -427,14 +560,25 @@ client(struct iperf_settings *settings)
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return 0;
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}
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/*--------------------------------------------------------
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* This is code for Server
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* -------------------------------------------------------*/
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int
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server(struct iperf_settings *settings)
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{
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int s, cs, sz;
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struct iperf_stream *sp;
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struct iperf_stream *sp,*temp;
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struct sockaddr_in sa_peer;
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socklen_t len;
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char buf[settings->bufsize], ubuf[UNIT_LEN];
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fd_set readset, tempset;
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int maxfd, flags;
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int peersock, j, result, result1, sent;
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struct timeval tv;
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char buffer[DEFAULT_TCP_BUFSIZE];
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struct sockaddr_in addr;
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s = netannounce(settings->proto, NULL, settings->port);
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if(s < 0)
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@ -444,48 +588,162 @@ server(struct iperf_settings *settings)
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perror("unable to set window");
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return -1;
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}
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printf("-----------------------------------------------------------\n");
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printf("Server listening on %d\n", settings->port);
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int x;
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if((x = getsock_tcp_windowsize(s, SO_RCVBUF)) < 0)
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perror("SO_RCVBUF");
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/*
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unit_snprintf(ubuf, UNIT_LEN, (double) x, 'A');
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printf("%s: %s\n",
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settings->proto == Ptcp ? "TCP window size" : "UDP buffer size", ubuf);
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*/
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printf("-----------------------------------------------------------\n");
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len = sizeof sa_peer;
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while(1) {
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if (Ptcp == settings->proto) {
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if( (cs = accept(s, (struct sockaddr *) &sa_peer, &len)) < 0) {
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perror("accept");
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return -1;
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}
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sp = new_stream(cs, settings);
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} else if (Pudp == settings->proto) {
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sz = recvfrom(s, buf, settings->bufsize, 0, (struct sockaddr *) &sa_peer, &len);
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if(!sz)
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break;
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FD_ZERO(&readset);
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FD_SET(s, &readset);
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maxfd = s;
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do {
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memcpy(&tempset, &readset, sizeof(tempset));
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tv.tv_sec = 15; // timeout interval in seconds
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tv.tv_usec = 0;
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// using select to check on multiple descriptors.
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result = select(maxfd + 1, &tempset, NULL, NULL, &tv);
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if (result == 0)
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{
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printf("select() timed out!\n");
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}
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else if (result < 0 && errno != EINTR)
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{
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printf("Error in select(): %s\n", strerror(errno));
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}
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else if (result > 0)
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{
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if (FD_ISSET(s, &tempset))
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{
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if(settings->proto== Ptcp) // New TCP Connection
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{
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len = sizeof(addr);
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peersock = accept(s,(struct sockaddr *) &addr, &len);
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if (peersock < 0)
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{
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printf("Error in accept(): %s\n", strerror(errno));
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}
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else
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{
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printf("=========================\n");
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printf("%d is the socket number\n",peersock);
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FD_SET(peersock, &readset);
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maxfd = (maxfd < peersock)?peersock:maxfd;
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// creating a new stream
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sp = new_stream(peersock, settings);
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printf(" new stream is %d \n", (int)sp);
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// need to manage the linked list of streams
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add_stream(sp);
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connect_msg(sp);
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Display();
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}
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}
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else if ( settings->proto== Pudp) //New UDP Connection
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{
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// getting a new UDP packet
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sz = recvfrom(s, buf, settings->bufsize, 0, (struct sockaddr *) &sa_peer, &len);
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if(!sz)
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break;
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if(connect(s, (struct sockaddr *) &sa_peer, len) < 0)
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{
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perror("connect");
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return -1;
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}
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// get a new socket to connect to client
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printf("=========================\n");
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sp = new_stream(s, settings);
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sp->bytes_in += sz;
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printf(" new stream is %d \n", (int)sp);
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// need to manage the linked list of streams
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add_stream(sp);
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if(connect(s, (struct sockaddr *) &sa_peer, len) < 0) {
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perror("connect");
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return -1;
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}
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sp = new_stream(s, settings);
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sp->bytes_in += sz;
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s = netannounce(settings->proto, NULL, settings->port);
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if(s < 0) {
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return -1;
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}
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}
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connect_msg(sp);
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pthread_create(&sp->thread, NULL, sp->server, (void *) sp);
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}
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s = netannounce(settings->proto, NULL, settings->port);
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if(s < 0)
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return -1;
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// same as TCP -repetation
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printf("%d is the socket number\n",s);
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FD_SET(s, &readset);
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maxfd = (maxfd < s)?s:maxfd;
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}
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FD_CLR(s, &tempset);
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}
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// scanning all socket descriptors for read
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for (j=0; j<maxfd+1; j++)
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{
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if (FD_ISSET(j, &tempset))
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{
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do
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{
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if(settings->proto==Ptcp)
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result = recv(j, buffer,DEFAULT_TCP_BUFSIZE, 0);
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else
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result = recv(j, buffer,DEFAULT_UDP_BUFSIZE, 0);
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} while (result == -1 && errno == EINTR);
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if (result > 0)
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{
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sp=find_update_stream(j,result);
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}
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else if (result == 0)
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{
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Display();
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//just find the stream with zero update
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sp = find_update_stream(j,0);
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if(settings->proto == Ptcp)
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{
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//printf("window: %d\n", getsock_tcp_windowsize(sp->sock, SO_RCVBUF));
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}
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unit_snprintf(ubuf, UNIT_LEN, (double) sp->bytes_in / sp->settings->duration, 'a');
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printf("%llu bytes received %s/sec for stream %d\n\n", sp->bytes_in, ubuf,(int)sp);
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close(j);
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FD_CLR(j, &readset);
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free_stream(sp); // this needs to be a linked list delete
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//break;
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}
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else
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{
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printf("Error in recv(): %s\n", strerror(errno));
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}
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} // end if (FD_ISSET(j, &tempset))
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} // end for (j=0;...)
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} // end else if (result > 0)
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} while (1);
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return 0;
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}
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