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/*
* Copyright (c) 2009, The Regents of the University of California, through
* Lawrence Berkeley National Laboratory (subject to receipt of any required
* approvals from the U.S. Dept. of Energy). All rights reserved.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <netinet/tcp.h>
#include <sys/time.h>
#include <sys/select.h>
#include "iperf.h"
#include "iperf_api.h"
#include "iperf_tcp.h"
#include "iperf_error.h"
#include "net.h"
/* iperf_tcp_recv
*
* receives the data for TCP
*/
int
iperf_tcp_recv(struct iperf_stream *sp)
{
int result = 0;
int size = sp->settings->blksize;
result = Nread(sp->socket, sp->buffer, size, Ptcp);
if (result < 0) {
return (-1);
}
sp->result->bytes_received += result;
sp->result->bytes_received_this_interval += result;
return (result);
}
/* iperf_tcp_send
*
* sends the data for TCP
*/
int
iperf_tcp_send(struct iperf_stream *sp)
{
int result;
int size = sp->settings->blksize;
result = Nwrite(sp->socket, sp->buffer, size, Ptcp);
if (result < 0) {
return (-1);
}
sp->result->bytes_sent += result;
sp->result->bytes_sent_this_interval += result;
return (result);
}
/* iperf_tcp_accept
*
* accept a new TCP stream connection
*/
int
iperf_tcp_accept(struct iperf_test * test)
{
int s;
int rbuf = ACCESS_DENIED;
char cookie[COOKIE_SIZE];
socklen_t len;
struct sockaddr_in addr;
len = sizeof(addr);
if ((s = accept(test->listener, (struct sockaddr *) &addr, &len)) < 0) {
i_errno = IESTREAMCONNECT;
return (-1);
}
if (Nread(s, cookie, COOKIE_SIZE, Ptcp) < 0) {
i_errno = IERECVCOOKIE;
return (-1);
}
if (strcmp(test->cookie, cookie) != 0) {
if (Nwrite(s, &rbuf, sizeof(char), Ptcp) < 0) {
i_errno = IESENDMESSAGE;
return (-1);
}
close(s);
}
return (s);
}
/* iperf_tcp_listen
*
* start up a listener for TCP stream connections
*/
int
iperf_tcp_listen(struct iperf_test *test)
{
int s, opt;
struct addrinfo hints, *res;
char portstr[6];
s = test->listener;
if (test->no_delay || test->settings->mss || test->settings->socket_bufsize) {
FD_CLR(s, &test->read_set);
close(s);
if ((s = socket(test->settings->domain, SOCK_STREAM, 0)) < 0) {
i_errno = IESTREAMLISTEN;
return (-1);
}
if (test->no_delay) {
opt = 1;
if (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt)) < 0) {
i_errno = IESETNODELAY;
return (-1);
}
printf(" TCP NODELAY: on\n");
}
// XXX: Setting MSS is very buggy!
if ((opt = test->settings->mss)) {
if (setsockopt(s, IPPROTO_TCP, TCP_MAXSEG, &opt, sizeof(opt)) < 0) {
i_errno = IESETMSS;
return (-1);
}
printf(" TCP MSS: %d\n", opt);
}
if ((opt = test->settings->socket_bufsize)) {
if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &opt, sizeof(opt)) < 0) {
i_errno = IESETBUF;
return (-1);
}
if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &opt, sizeof(opt)) < 0) {
i_errno = IESETBUF;
return (-1);
}
}
opt = 1;
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
i_errno = IEREUSEADDR;
return (-1);
}
snprintf(portstr, 6, "%d", test->server_port);
memset(&hints, 0, sizeof(hints));
hints.ai_family = test->settings->domain;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
// XXX: Check getaddrinfo for errors!
if (getaddrinfo(test->bind_address, portstr, &hints, &res) != 0) {
i_errno = IESTREAMLISTEN;
return (-1);
}
if (bind(s, (struct sockaddr *) res->ai_addr, res->ai_addrlen) < 0) {
close(s);
i_errno = IESTREAMLISTEN;
return (-1);
}
freeaddrinfo(res);
if (listen(s, 5) < 0) {
i_errno = IESTREAMLISTEN;
return (-1);
}
test->listener = s;
}
return (s);
}
/* iperf_tcp_connect
*
* connect to a TCP stream listener
*/
int
iperf_tcp_connect(struct iperf_test *test)
{
int s, opt;
struct addrinfo hints, *res;
char portstr[6];
if ((s = socket(test->settings->domain, SOCK_STREAM, 0)) < 0) {
i_errno = IESTREAMCONNECT;
return (-1);
}
if (test->bind_address) {
memset(&hints, 0, sizeof(hints));
hints.ai_family = test->settings->domain;
hints.ai_socktype = SOCK_STREAM;
// XXX: Check getaddrinfo for errors!
if (getaddrinfo(test->bind_address, NULL, &hints, &res) != 0) {
i_errno = IESTREAMCONNECT;
return (-1);
}
if (bind(s, (struct sockaddr *) res->ai_addr, res->ai_addrlen) < 0) {
i_errno = IESTREAMCONNECT;
return (-1);
}
freeaddrinfo(res);
}
/* Set socket options */
if (test->no_delay) {
opt = 1;
if (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt)) < 0) {
i_errno = IESETNODELAY;
return (-1);
}
}
if ((opt = test->settings->mss)) {
if (setsockopt(s, IPPROTO_TCP, TCP_MAXSEG, &opt, sizeof(opt)) < 0) {
i_errno = IESETMSS;
return (-1);
}
}
if ((opt = test->settings->socket_bufsize)) {
if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &opt, sizeof(opt)) < 0) {
i_errno = IESETBUF;
return (-1);
}
if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &opt, sizeof(opt)) < 0) {
i_errno = IESETBUF;
return (-1);
}
}
memset(&hints, 0, sizeof(hints));
hints.ai_family = test->settings->domain;
hints.ai_socktype = SOCK_STREAM;
snprintf(portstr, 6, "%d", test->server_port);
// XXX: Check getaddrinfo for errors!
if (getaddrinfo(test->server_hostname, portstr, &hints, &res) != 0) {
i_errno = IESTREAMCONNECT;
return (-1);
}
if (connect(s, (struct sockaddr *) res->ai_addr, res->ai_addrlen) < 0 && errno != EINPROGRESS) {
i_errno = IESTREAMCONNECT;
return (-1);
}
freeaddrinfo(res);
/* Send cookie for verification */
if (Nwrite(s, test->cookie, COOKIE_SIZE, Ptcp) < 0) {
i_errno = IESENDCOOKIE;
return (-1);
}
return (s);
}
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