/** @return false and set error code and description string on failure */
bool ArSocket::connectTo(const char *host, int port)
{
char localhost[maxHostNameLen()];
myError = NoErr;
myErrorStr.clear();
if (myFD < 0)
return(false);
if (!host)
{
if (gethostname(localhost, sizeof(localhost)) == 1)
{
myErrorStr="Failure to locate host '";
myErrorStr+=localhost;
myErrorStr+="'";
perror("gethostname");
return(false);
}
host=localhost;
}
char useHost[1024];
int usePort;
separateHost(host, port, useHost, sizeof(useHost), &usePort);
bzero(&mySin, sizeof(mySin));
if (!hostAddr(useHost, mySin.sin_addr))
return(false);
setRawIPString();
mySin.sin_family=AF_INET;
mySin.sin_port=hostToNetOrder(usePort);
return(connectTo(&mySin));
}
/*
* 得到本地主机名
* */
std::string RobotSocket::getHostName()
{
char localhost[maxHostNameLen()];
if (gethostname(localhost, sizeof(localhost)) == 1)
return("");
else
return(localhost);
}
/** @return false and set error code and description string on failure */
bool ArSocket::connect(const char *host, int port, Type type,
const char *openOnIP)
{
char localhost[maxHostNameLen()];
myError=NoErr;
myErrorStr.clear();
if (!host)
{
if (gethostname(localhost, sizeof(localhost)) == 1)
{
myError=ConBadHost;
myErrorStr="Failure to locate host '";
myErrorStr+=localhost;
myErrorStr+="'";
perror("gethostname");
return(false);
}
host=localhost;
}
bzero(&mySin, sizeof(mySin));
// MPL taking out this next code line from the if since it makes
// everything we can't resolve try to connect to localhost
// && !hostAddr("localhost", mySin.sin_addr))
char useHost[1024];
int usePort;
separateHost(host, port, useHost, sizeof(useHost), &usePort);
if (!hostAddr(useHost, mySin.sin_addr))
return(false);
setRawIPString();
mySin.sin_family=AF_INET;
mySin.sin_port=hostToNetOrder(usePort);
if ((type == TCP) && ((myFD=socket(AF_INET, SOCK_STREAM, 0)) < 0))
{
myError=NetFail;
myErrorStr="Failure to make TCP socket";
perror("socket");
return(false);
}
else if ((type == UDP) && ((myFD=socket(AF_INET, SOCK_DGRAM, 0)) < 0))
{
myError=NetFail;
myErrorStr="Failure to make UDP socket";
perror("socket");
return(false);
}
ArUtil::setFileCloseOnExec(myFD);
if (openOnIP != NULL)
{
struct sockaddr_in outSin;
if (!hostAddr(openOnIP, outSin.sin_addr))
{
myError = NameLookup;
myErrorStr = "Name lookup failed";
ArLog::log(ArLog::Normal, "Couldn't find ip of %s to open on", openOnIP);
return(false);
}
outSin.sin_family=AF_INET;
outSin.sin_port=hostToNetOrder(0);
if (bind(myFD, (struct sockaddr *)&outSin, sizeof(outSin)) < 0)
{
ArLog::log(ArLog::Normal, "Failure to bind socket to port %d", 0);
perror("socket");
return(false);
}
}
myType=type;
if (::connect(myFD, (struct sockaddr *)&mySin,
sizeof(struct sockaddr_in)) < 0)
{
myErrorStr="Failure to connect socket";
switch (errno)
{
case ECONNREFUSED:
myError=ConRefused;
myErrorStr+="; Connection refused";
break;
case ENETUNREACH:
myError=ConNoRoute;
myErrorStr+="; No route to host";
break;
default:
myError=NetFail;
break;
}
//perror("connect");
::close(myFD);
myFD = -1;
return(false);
}
return(true);
}
/** @return false and set error code and description string on failure */
bool ArSocket::open(int port, Type type, const char *openOnIP)
{
int ret;
char localhost[maxHostNameLen()];
myError=NoErr;
myErrorStr.clear();
if ((type == TCP) && ((myFD=socket(AF_INET, SOCK_STREAM, 0)) < 0))
{
myErrorStr="Failure to make TCP socket";
perror("socket");
return(false);
}
else if ((type == UDP) && ((myFD=socket(AF_INET, SOCK_DGRAM, 0)) < 0))
{
myErrorStr="Failure to make UDP socket";
perror("socket");
return(false);
}
ArUtil::setFileCloseOnExec(myFD);
setLinger(0);
setReuseAddress();
myType=type;
/* MPL removed this since with what I Took out down below months ago
if (gethostname(localhost, sizeof(localhost)) == 1)
{
myErrorStr="Failure to locate localhost";
perror("gethostname");
return(false);
}
*/
bzero(&mySin, sizeof(mySin));
/* MPL took this out since it was just overriding it with the
INADDR_ANY anyways and it could cause slowdowns if a machine wasn't
configured so lookups are quick
if (!hostAddr(localhost, mySin.sin_addr) &&
!hostAddr("localhost", mySin.sin_addr))
return(false); */
if (openOnIP != NULL)
{
if (!hostAddr(openOnIP, mySin.sin_addr))
{
ArLog::log(ArLog::Normal, "Couldn't find ip of %s to open on", openOnIP);
myError = NameLookup;
myErrorStr = "Name lookup failed";
return(false);
}
else
{
//printf("Opening on %s\n", openOnIP);
}
}
else
{
mySin.sin_addr.s_addr=htonl(INADDR_ANY);
}
setRawIPString();
mySin.sin_family=AF_INET;
mySin.sin_port=hostToNetOrder(port);
if ((ret=bind(myFD, (struct sockaddr *)&mySin, sizeof(mySin))) < 0)
{
myError = NetFail;
myErrorStr="Failure to bind socket to port ";
sprintf(localhost, "%d", port);
myErrorStr+=localhost;
perror("socket");
return(false);
}
if ((type == TCP) && (listen(myFD, 5) < 0))
{
myError = NetFail;
myErrorStr="Failure to listen on socket";
perror("listen");
return(false);
}
return(true);
}
/*
* 作为服务器套接字
* 完成套接字的穿件，绑定
*
* */
bool RobotSocket::open(int port, Type type, const char *openOnIP)
{
int ret;
char localhost[maxHostNameLen()];
if ((type == TCP) && ((myFD=socket(AF_INET, SOCK_STREAM, 0)) < 0))
{
myErrorStr="[socket]创建TCP套接字失败";
perror(myErrorStr.c_str());
return(false);
}
else if ((type == UDP) && ((myFD=socket(AF_INET, SOCK_DGRAM, 0)) < 0))
{
myErrorStr="[socket]创建UDP套接字失败";
perror(myErrorStr.c_str());
return(false);
}
myType=type;
bzero(&mySin, sizeof(mySin));
if (openOnIP != NULL)
{
if (!hostAddr(openOnIP, mySin.sin_addr))
{
/*不能查找到此IP主机*/
return(false);
}
else
{
/*成功*/
}
}
else
{
mySin.sin_addr.s_addr = htonl(INADDR_ANY); //任意分配本机有的IP，任务交给内核
}
setIPString();
mySin.sin_family = AF_INET;
mySin.sin_port = hostToNetOrder(port);
if ((ret=bind(myFD, (struct sockaddr *)&mySin, sizeof(mySin))) < 0)
{
myErrorStr="[bind]绑定失败";
sprintf(localhost, "%d", port);
myErrorStr+=localhost;
perror(myErrorStr.c_str());
return(false);
}
if ((type == TCP) && (listen(myFD, 5) < 0))
{
myErrorStr="[listen]绑定失败";
perror(myErrorStr.c_str());
return(false);
}
return(true);
}