mirror of
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119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
/* srltest.c */
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/wait.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <time.h>
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#include <ctype.h>
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#ifdef CAN_USE_SYS_SELECT_H
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# include <sys/select.h>
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#endif
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#include "sio.h"
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static void
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ServeOneClient(int sockfd, struct sockaddr_in *cliAddr)
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{
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char buf[80], cliAddrStr[64];
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char bbuf[320];
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int nread, nwrote, i;
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SReadlineInfo srl;
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printf("subserver[%d]: started, connected to %s.\n", (int) getpid(),
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AddrToAddrStr(cliAddrStr, sizeof(cliAddrStr), cliAddr, 1, "<%h:%p>")
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);
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if (InitSReadlineInfo(&srl, sockfd, bbuf, sizeof(bbuf), 5) < 0) {
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fprintf(stderr, "subserver[%d]: InitSReadlineInfo error: %s\n",
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(int) getpid(), strerror(errno));
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exit(1);
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}
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for (;;) {
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nread = SReadline(&srl, buf, sizeof(buf));
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if (nread == 0) {
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break;
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} else if (nread == kTimeoutErr) {
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printf("subserver[%d]: idle\n", (int) getpid());
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continue;
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} else if (nread < 0) {
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fprintf(stderr, "subserver[%d]: read error: %s\n",
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(int) getpid(), strerror(errno));
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break;
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}
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for (i=0; i<nread; i++)
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if (islower(buf[i]))
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buf[i] = toupper(buf[i]);
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nwrote = SWrite(sockfd, buf, nread, 15);
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if (nwrote < 0) {
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fprintf(stderr, "subserver[%d]: write error: %s\n",
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(int) getpid(), strerror(errno));
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break;
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}
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}
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(void) SClose(sockfd, 10);
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printf("subserver[%d]: done.\n", (int) getpid());
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exit(0);
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} /* ServeOneClient */
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static void
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Server(int port)
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{
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int sockfd, newsockfd;
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struct sockaddr_in cliAddr;
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int pid;
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sockfd = SNewStreamServer(port, 3, kReUseAddrYes, 3);
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if (sockfd < 0) {
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perror("Server setup failed");
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exit(1);
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}
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printf("server[%d]: started.\n", (int) getpid());
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for(;;) {
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while (waitpid(-1, NULL, WNOHANG) > 0) ;
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newsockfd = SAccept(sockfd, &cliAddr, 5);
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if (newsockfd < 0) {
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if (newsockfd == kTimeoutErr)
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printf("server[%d]: idle\n", (int) getpid());
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else
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fprintf(stderr, "server[%d]: accept error: %s\n",
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(int) getpid(), strerror(errno));
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} else if ((pid = fork()) < 0) {
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fprintf(stderr, "server[%d]: fork error: %s\n",
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(int) getpid(), strerror(errno));
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exit(1);
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} else if (pid == 0) {
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ServeOneClient(newsockfd, &cliAddr);
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exit(0);
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} else {
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/* Parent doesn't need it now. */
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(void) close(newsockfd);
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}
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}
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} /* Server */
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void
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main(int argc, char **argv)
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{
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int port;
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if (argc < 2) {
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fprintf(stderr, "Usage: %s <port>\n", argv[0]);
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exit(2);
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}
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port = atoi(argv[1]);
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Server(port);
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exit(0);
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} /* main */
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