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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <sys/ioctl.h>
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#include <emscripten.h>
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void finish(int result) {
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void iter(void *arg) {
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// make sure that sockfd is ready to read
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res = select(64, &fdr, NULL, NULL, NULL);
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perror("select failed");
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} else if (!FD_ISSET(sockfd, &fdr)) {
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res = recv(sockfd, buffer, 1, 0);
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if (errno == EAGAIN || errno == EWOULDBLOCK) {
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perror("unexcepted end of data");
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perror("should read 1 byte");
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packetLength = buffer[0];
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res = recv(sockfd, buffer, packetLength, 0);
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printf("got %d,%d\n", res, packetLength);
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if (res != packetLength) {
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fprintf(stderr, "lost packet data, expected: %d readed: %d", packetLength, res);
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for (i = 0; i < packetLength; ++i) {
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if (buffer[i] != i+1) {
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fprintf(stderr, "packet corrupted, expected: %d, actual: %d", i+1, buffer[i]);
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if (packetLength == buffer[0]) { // \x01\x01 - end marker
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printf("sum: %d\n", sum);
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struct sockaddr_in addr;
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sockfd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
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perror("cannot create socket");
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fcntl(sockfd, F_SETFL, O_NONBLOCK);
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memset(&addr, 0, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_port = htons(SOCKK);
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if (inet_pton(AF_INET, "127.0.0.1", &addr.sin_addr) != 1) {
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perror("inet_pton failed");
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finish(EXIT_FAILURE);
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res = connect(sockfd, (struct sockaddr *)&addr, sizeof(addr));
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if (res == -1 && errno != EINPROGRESS) {
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perror("connect failed");
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finish(EXIT_FAILURE);
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emscripten_set_main_loop(iter, 0, 0);
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while (1) iter(NULL);