74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
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/*
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* udp echo server
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*
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* @build make examples
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* @server bin/udp_echo_server 1234
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* @client bin/nc -u 127.0.0.1 1234
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* nc -u 127.0.0.1 1234
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*
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*/
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#include "hloop.h"
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#include "hsocket.h"
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/*
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* @test kcp_server
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* #define TEST_KCP 1
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*
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* @build ./configure --with-kcp && make clean && make
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* @server bin/udp_echo_server 1234
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* @client bin/nc -k 127.0.0.1 1234
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*
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*/
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#define TEST_KCP 0
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static void on_recvfrom(hio_t* io, void* buf, int readbytes) {
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printf("on_recvfrom fd=%d readbytes=%d\n", hio_fd(io), readbytes);
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char localaddrstr[SOCKADDR_STRLEN] = {0};
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char peeraddrstr[SOCKADDR_STRLEN] = {0};
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printf("[%s] <=> [%s]\n",
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SOCKADDR_STR(hio_localaddr(io), localaddrstr),
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SOCKADDR_STR(hio_peeraddr(io), peeraddrstr));
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char* str = (char*)buf;
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printf("< %.*s", readbytes, str);
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// echo
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printf("> %.*s", readbytes, str);
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hio_write(io, buf, readbytes);
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#if TEST_KCP
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if (strncmp(str, "CLOSE", 5) == 0) {
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hio_close_rudp(io, hio_peeraddr(io));
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}
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#endif
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}
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int main(int argc, char** argv) {
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if (argc < 2) {
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printf("Usage: %s port|path\n", argv[0]);
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return -10;
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}
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const char* host = "0.0.0.0";
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int port = atoi(argv[1]);
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#if ENABLE_UDS
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if (port == 0) {
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host = argv[1];
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port = -1;
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}
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#endif
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hloop_t* loop = hloop_new(0);
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hio_t* io = hloop_create_udp_server(loop, host, port);
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if (io == NULL) {
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return -20;
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}
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#if TEST_KCP
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hio_set_kcp(io, NULL);
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#endif
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hio_setcb_read(io, on_recvfrom);
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hio_read(io);
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hloop_run(loop);
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hloop_free(&loop);
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return 0;
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}
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