More Issues

[kodex]

Sorry to keep bothering you guys but im pretty lost without my books and code, and searching google hasnt yeilded and great results yet. Im getting a "exited due to signal 13 (SIGPIPE)" on send();, this is a new one too me since its the send after making a network connection =p.

Anyways code for connection to host

static void SendConnectionRequestToHost(char *ipAddrString)
{
struct sockaddr_in hostAddr;

//creates a connection socket (TCP/IP Streaming)
gConnectionToHost = socket(AF_INET, SOCK_STREAM, nil);

//setup addy info for our host
bzero(&hostAddr, sizeof(hostAddr)); //clear

hostAddr.sin_family = AF_INET; //network type internet
hostAddr.sin_port = htons(5500); //our port number

inet_pton(AF_INET, ipAddrString, &hostAddr.sin_addr);

//issue connection request
if (connect(gConnectionToHost, (struct sockaddr *)&hostAddr, sizeof(hostAddr))< 0)
{
printf("CANNOT CONNECT!\n");

}//failed host is not there

if(WriteNetData(gConnectionToHost, "Hello", 32) <=0)
{
printf("FAILED WRITE");
}
}


Send Data Code

int WriteNetData(int socket, void *buffer, int numBytes)
{
Ptr bytes = buffer; //ptr to buffer
int count, n;

n = count =0;


while(count< numBytes) //loop until we have sent all bytes
{
n = send(socket, bytes, numBytes - count, 0); //send..... CRASHES HERE

if(n>0)
{
count += n;
bytes += n;
}

else
if(n<0) //error
return(-1);
}

return(count);

}


Thanks in advance guys

[wadesworld]

1) You're not checking to be sure your socket is valid
2) Call select on the socket before calling send to make sure the socket is available for writing.

Wade

[kodex]

calling this code before sending data, same error same crash. Yes it returns true.


static Boolean IsSocketReadyForWrite(int socket)
{
struct fd_set connectionSet;
struct timeval timeout;
int result;

//set timeout values
timeout.tv_sec =0;
timeout.tv_usec =0;

FD_ZERO(&connectionSet);
FD_SET(socket, &connectionSet);

//call select to see if data is waiting on the socket
result = select(socket+1, nil, &connectionSet, nil, &timeout);

//check results
if (result < 0 )
return (false);
if (result>0)
{
if(FD_ISSET(socket, &connectionSet))
return(true);
else
return(false);
}

return(false);

}

[Steven]

Are you sure that socket() did not fail? Are you checking the result and calling perror() if necessary?

[kodex]

Socket returns a 6, no other errors besides failure to connect on connect. which i think is related. Anyone want to take a look at my whole source i could email it to you pretty small. Would be very grateful :D

[wadesworld]

Well yeah - if it did not connect, you can't send.

Sure, send me your code and I'll take a look. wade at dogwatchsw.com

Wade