c - Reading packets from a client stops after 1 or 2 received -


i'm writing server program in c read commands client. commands in form of 5 byte packets, , client sending bunch of them in succession. code have read each command is:

while(1) {     char buffer[1024];     int alreadyread = 0;     int socket = dequeue();      while(alreadyread != 5)     {                 {             nowread = read(socket,buffer+alreadyread,5-alreadyread);             alreadyread += nowread;         }         while((nowread > 0) && (5-alreadyread > 0));          if(nowread == -1 || nowread == 0)         {             printf("error reading client socket\n");             exit(1);         }               //do command

but doesn't seem work: if client sends 10 packets, read 1 or 2 , segfault. have idea why?

the while (alreadyread != 5) seems extraneous since alreadyread 5 or nowread less 0 after do-while, , if nowread less 0 exit.

you've poorly defined command, think need more information on that.

it looks you're getting new socket after each command. if it's 1 client sending commands, should keep socket until commands want. should close socket after done don't run out of file descriptors.

the segfault caused area of program haven't shown.


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