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Annotation of xinu/sys/TEST/test.c.udpecho, revision 1.1

1.1     ! root        1: /* test.c - main */
        !             2: 
        !             3: #include <conf.h>
        !             4: #include <kernel.h>
        !             5: #include <deqna.h>
        !             6: #include <ether.h>
        !             7: #include <ip.h>
        !             8: #include <dgram.h>
        !             9: #include <net.h>
        !            10: 
        !            11: 
        !            12: /*------------------------------------------------------------------------
        !            13:  *  main  --  UDP echo server that listens on port 7 and 
        !            14:  *------------------------------------------------------------------------
        !            15:  */
        !            16: main()
        !            17: {
        !            18:        int     echodev;
        !            19:        int     len;
        !            20:        struct  xdgram  buff;
        !            21: 
        !            22:        printf("UDP Echo server at work...\n");
        !            23: 
        !            24:        echodev = open(NETWORK, ANYFPORT, UECHO);
        !            25: 
        !            26:        while (TRUE) {
        !            27:                len = read(echodev, &buff, sizeof(struct xdgram));
        !            28:                if (len == SYSERR)
        !            29:                        continue;
        !            30:                write(echodev, &buff, len);
        !            31:        }
        !            32: }

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