54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#define PORT 8080
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#define SERVER_IP "127.0.0.1"
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#define BUFFER_SIZE 1024
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int main() {
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int sock = 0;
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struct sockaddr_in serv_addr;
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const char *hello = "Hello from TCP Client";
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char buffer[BUFFER_SIZE] = {0};
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// 1. Create socket
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if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
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printf("\n Socket creation error \n");
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return -1;
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}
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serv_addr.sin_family = AF_INET;
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serv_addr.sin_port = htons(PORT);
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// Convert IPv4 and IPv6 addresses from text to binary form
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if (inet_pton(AF_INET, SERVER_IP, &serv_addr.sin_addr) <= 0) {
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printf("\nInvalid address/ Address not supported \n");
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return -1;
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}
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// 2. Connect to server
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if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
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printf("\nConnection Failed \n");
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return -1;
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}
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// 3. Send data
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send(sock, hello, strlen(hello), 0);
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printf("Message sent to server: %s\n", hello);
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// 4. Receive response
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int valread = read(sock, buffer, BUFFER_SIZE);
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if (valread > 0) {
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printf("Server response: %s\n", buffer);
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}
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// 5. Close socket
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close(sock);
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return 0;
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}
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