不用做服务器接收数据

.gitignore

@@ -1 +1,83 @@
 # tc
+/.idea/*
+/build/*
+
+
+
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# SonarLint plugin
+.idea/sonarlint/
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser

CMakeLists.txt

@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.17)
+project(udpClient)
+
+include_directories(/usr/include)
+
+set(CMAKE_CXX_STANDARD 11)
+
+file(GLOB_RECURSE SRC *.c)
+
+#add_executable(${CMAKE_PROJECT_NAME}
+#        ${SRC}
+#        )
+#
+#target_link_libraries(${CMAKE_PROJECT_NAME})
+
+add_executable(${CMAKE_PROJECT_NAME} udpClient.c)

udpClient.c

@@ -48,28 +48,28 @@ int main(int argc, char *argv[])
     server.sin_family = AF_INET;
     server.sin_port = htons(PORT);
     server.sin_addr= *((struct in_addr *)he->h_addr);
-    
-    sendto(sockfd, argv[2],strlen(argv[2]),0,(struct sockaddr *)&server,sizeof(server));
-    
-    socklen_t  addrlen;
-    addrlen=sizeof(server);
-    while (1)
-    {
-        if((num=recvfrom(sockfd,buf,MAXDATASIZE,0,(struct sockaddr *)&peer,&addrlen))== -1)
-        {
-            printf("recvfrom() error\n");
-            exit(1);
-        }
-        if (addrlen != sizeof(server) ||memcmp((const void *)&server, (const void *)&peer,addrlen) != 0)
-        {
-            printf("Receive message from otherserver.\n");
-            continue;
-        }
 
-        buf[num]='\0';
-        printf("Server Message:%s\n",buf);
-        break;
-    }
+    sendto(sockfd, argv[2],strlen(argv[2]),0,(struct sockaddr *)&server,sizeof(server));
+
+//    socklen_t  addrlen;
+//    addrlen=sizeof(server);
+//    while (1)
+//    {
+//        if((num=recvfrom(sockfd,buf,MAXDATASIZE,0,(struct sockaddr *)&peer,&addrlen))== -1)
+//        {
+//            printf("recvfrom() error\n");
+//            exit(1);
+//        }
+//        if (addrlen != sizeof(server) ||memcmp((const void *)&server, (const void *)&peer,addrlen) != 0)
+//        {
+//            printf("Receive message from otherserver.\n");
+//            continue;
+//        }
+//
+//        buf[num]='\0';
+//        printf("Server Message:%s\n",buf);
+//        break;
+//    }
 
     close(sockfd);
 }