Crash if no message is received from a SOCKITsendnrecv call
Posted June 19th, 2008 by andyfaff
| Project: | SOCKIT - speaking and listening to TCP/IP network sockets using IGOR Pro |
| Version: | IGOR.5.00.x-1.x-dev |
| Component: | Code |
| Category: | bug report |
| Priority: | normal |
| Assigned: | andyfaff |
| Status: | closed |
Description
A crash occurred if the socket in the call to SOCKITsendnrecv does not return a message. This is because PutCStringInHandle cannot handle being passed a NULL pointer. The crash only occurred if another socket that you have open (not the one you sent the message to) has a message waiting to be read.
Updates
Fixed bug by testing to see if there was a message received with length >0. If the message is zero length then make the message null terminated.
Don't put this null message in the bufferwave, as nothing was received. Put the message in S_tcp though.
if(!chunk.getData()){ chunk.WriteMemoryCallback('\0', sizeof(char), 1); goto done; }