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63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
/*
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g++ udp-client.cpp ../../objs/st/libst.a -g -O0 -o udp-client && ./udp-client 127.0.0.1 8000 3
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include "../../objs/st/st.h"
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#include <sys/socket.h>
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#include <arpa/inet.h>
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void* pfn(void* arg) {
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sockaddr_in addr = *(sockaddr_in*)arg;
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char* ip = inet_ntoa(addr.sin_addr);
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int port = ntohs(addr.sin_port);
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int fd = ::socket(AF_INET, SOCK_DGRAM, 0);
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st_netfd_t stfd = st_netfd_open_socket(fd);
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printf("connect to %s:%d, fd=%d ok\n", ip, port, fd);
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while (true) {
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char data[] = "Hello world!";
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int r0 = st_sendto(stfd, data, sizeof(data), (sockaddr*)&addr, sizeof(sockaddr_in), ST_UTIME_NO_TIMEOUT);
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printf("fd #%d, send %dB %s, r0=%d\n", fd, (int)sizeof(data), data, r0);
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if (r0 != (int)sizeof(data)) {
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break;
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}
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st_usleep(800 * 1000);
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}
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st_netfd_close(stfd);
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return NULL;
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}
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int main(int argc, char** argv) {
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if (argc < 4) {
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printf("Usage: %s ip port workers\n", argv[0]);
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exit(-1);
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}
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st_init();
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const char* ip = argv[1];
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int port = ::atoi(argv[2]);
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int workers = ::atoi(argv[3]);
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printf("Start %d workers, to %s:%d\n", workers, ip, port);
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sockaddr_in addr;
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addr.sin_family = AF_INET;
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addr.sin_addr.s_addr = inet_addr(ip);
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addr.sin_port = htons(port);
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for (int i = 0; i < workers; i++) {
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st_thread_t thread = st_thread_create(pfn, &addr, 1, 0);
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assert(thread);
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}
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st_thread_exit(NULL);
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return 0;
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}
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