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tried to fix the simult connection issue

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This commit is contained in:
Charles Descamps 2025-02-20 20:06:27 -07:00
parent 44b997c69f
commit 7c6d817b26
1 changed files with 5 additions and 3 deletions
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8
echoserver/echoserver.c
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@ -62,8 +62,10 @@ int main(int argc, char **argv)
printf("Echoserver listening on port: %d\n", ECHOPORT); printf("Echoserver listening on port: %d\n", ECHOPORT);
while (quitFlag) while (quitFlag)
{ {
// set of active connections
fd_set activeSet = socketList;
// use the select() function here to check the set of sockets // use the select() function here to check the set of sockets
int selectedFD = select(maxFD+1, &socketList, NULL, NULL, NULL); int selectedFD = select(maxFD+1, &activeSet, NULL, NULL, NULL);
// check to make sure select() didn't error out. // check to make sure select() didn't error out.
if(selectedFD == -1) if(selectedFD == -1)
{ {
@ -75,7 +77,7 @@ int main(int argc, char **argv)
for(int fileIter = 0; fileIter <= maxFD; fileIter++) for(int fileIter = 0; fileIter <= maxFD; fileIter++)
{ {
// check to see if the file descriptor is in the set of sockets using FD_ISSET() // check to see if the file descriptor is in the set of sockets using FD_ISSET()
if(FD_ISSET(fileIter, &socketList)) if(FD_ISSET(fileIter, &activeSet))
{ {
// if the server socket is being written to/read from, // if the server socket is being written to/read from,
if(fileIter == socketEchoFD) if(fileIter == socketEchoFD)
@ -111,7 +113,7 @@ int main(int argc, char **argv)
// grab the data from the client, save to message. // grab the data from the client, save to message.
messageBytes = recv(fileIter, message, BUFFER_SIZE, 0); messageBytes = recv(fileIter, message, BUFFER_SIZE, 0);
// make sure that the connection is still open before attempting to send. // make sure that the connection is still open before attempting to send.
if(messageBytes == 0) // old: messageBytes <= 0 if(messageBytes <= 0) // old: messageBytes <= 0
{ {
// if it is not open, close the socket and remove the socket from the socket list using FD_CLR() // if it is not open, close the socket and remove the socket from the socket list using FD_CLR()
close(fileIter); close(fileIter);