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- client_0: 4
- client_1: 8
- client_2: 5
- client_4: 7
- #define PORT 60000
- #include <unistd.h>
- #include <sys/socket.h>
- #include <netinet/in.h>
- #include <vector>
- #include <string>
- #include <iostream>
- #include <mutex>
- using namespace std;
- vector<int> inputQueue; //<--------!
- mutex mtx; //<---------------------!
- void printVector(vector<int> input) {
- cout << "inputQueue: [";
- for (unsigned int i = 0; i < input.size(); i++ ) {
- if (i != input.size() - 1)
- cout << input[i] << ", ";
- else
- cout << input[i];
- }
- cout << "]." << endl;
- }
- int main(int argc, char const *argv[])
- {
- int server_fd, client_fd;
- struct sockaddr_in address;
- int opt = 1;
- int addrlen = sizeof(address);
- if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
- perror("socket failed");
- exit(EXIT_FAILURE);
- }
- if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))) {
- perror("setsockopt");
- exit(EXIT_FAILURE);
- }
- address.sin_family = AF_INET;
- address.sin_addr.s_addr = INADDR_ANY;
- address.sin_port = htons( PORT );
- if (bind(server_fd, (struct sockaddr *)&address, sizeof(address))<0) {
- perror("bind failed");
- exit(EXIT_FAILURE);
- }
- if (listen(server_fd, 10) < 0) {
- perror("listen");
- exit(EXIT_FAILURE);
- }
- while(1) {
- char buffer[4];
- if ((client_fd = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen))<0) {
- perror("accept");
- exit(EXIT_FAILURE);
- }
- if (!fork()) {
- recv(client_fd, buffer, 4, MSG_WAITALL);
- int receivedInt = int(
- (unsigned char)(buffer[0]) << 24 |
- (unsigned char)(buffer[1]) << 16 |
- (unsigned char)(buffer[2]) << 8 |
- (unsigned char)(buffer[3])
- );
- mtx.lock(); //<-------------------------------------!
- inputQueue.push_back(receivedInt); //<--------------!
- cout << "Client context. Integer registered: " << receivedInt << ": inputQueue length is " << inputQueue.size() << endl;
- printVector(inputQueue); //<------------------------!
- mtx.unlock(); //<-----------------------------------!
- close(server_fd); close(client_fd);
- }
- cout << "Server context: inputQueue length is " << inputQueue.size() << endl;
- printVector(inputQueue);
- }
- return 0;
- }
- Server context: inputQueue length is 0
- inputQueue: [].
- Client context. Integer registered: 4: inputQueue length is 1
- inputQueue: [4].
- Server context: inputQueue length is 1
- inputQueue: [4].
- Server context: inputQueue length is 0
- inputQueue: [].
- Client context. Integer registered: 8: inputQueue length is 1
- inputQueue: [8].
- Server context: inputQueue length is 0
- inputQueue: [].
- Server context: inputQueue length is 1
- inputQueue: [8].
- Client context. Integer registered: 5: inputQueue length is 1
- inputQueue: [5].
- Server context: inputQueue length is 1
- inputQueue: [5].
- Server context: inputQueue length is 0
- inputQueue: [].
- Client context. Integer registered: 7: inputQueue length is 1
- inputQueue: [7].
- Server context: inputQueue length is 1
- inputQueue: [7].
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