add socket utils

Sun, 15 Feb 2026 12:24:38 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 15 Feb 2026 12:24:38 +0100
changeset 673
144bdc33fdb6
parent 672
226bfd584075
child 674
6a031133a498

add socket utils

src/server/proxy/httpclient.c file | annotate | diff | comparison | revisions
src/server/proxy/httpclient.h file | annotate | diff | comparison | revisions
src/server/test/main.c file | annotate | diff | comparison | revisions
src/server/util/objs.mk file | annotate | diff | comparison | revisions
src/server/util/socket.c file | annotate | diff | comparison | revisions
src/server/util/socket.h file | annotate | diff | comparison | revisions
--- a/src/server/proxy/httpclient.c	Sun Feb 15 11:16:50 2026 +0100
+++ b/src/server/proxy/httpclient.c	Sun Feb 15 12:24:38 2026 +0100
@@ -28,6 +28,8 @@
 
 #include "httpclient.h"
 
+#include "../util/socket.h"
+
 #include <cx/buffer.h>
 #include <cx/string.h>
 #include <stdlib.h>
@@ -160,14 +162,11 @@
         return 1;
     }
     
-    int flags;
-    if ((flags = fcntl(socketfd, F_GETFL, 0)) == -1) {
-        flags = 0;
-    }
-    if (fcntl(socketfd, F_SETFL, flags | O_NONBLOCK) != 0) {
+    if(util_socket_setnonblock(socketfd, 1)) {
         close(socketfd);
         return 1;
     }
+    
     client->socketfd = socketfd;
     
     client->writeev.cookie = client;
@@ -353,3 +352,17 @@
     
     return client->req_buffer_pos < client->req_buffer_len;
 }
+
+
+
+/* --------------------------------- Tests --------------------------------- */
+
+static CX_TEST(test_http_client_send_request) {
+    CX_TEST_DO {
+        
+    }
+}
+
+void http_client_add_tests(CxTestSuite *suite) {
+    cx_test_register(suite, test_http_client_send_request);
+}
--- a/src/server/proxy/httpclient.h	Sun Feb 15 11:16:50 2026 +0100
+++ b/src/server/proxy/httpclient.h	Sun Feb 15 12:24:38 2026 +0100
@@ -35,6 +35,7 @@
 #include <sys/socket.h>
 #include <cx/string.h>
 #include <cx/mempool.h>
+#include <cx/test.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -149,6 +150,9 @@
 
 int http_client_start(HttpClient *client);
 
+
+void http_client_add_tests(CxTestSuite *suite);
+
 #ifdef __cplusplus
 }
 #endif
--- a/src/server/test/main.c	Sun Feb 15 11:16:50 2026 +0100
+++ b/src/server/test/main.c	Sun Feb 15 12:24:38 2026 +0100
@@ -40,6 +40,7 @@
 #include "../util/date.h"
 #include "../daemon/vfs.h"
 #include "../safs/proxy.h"
+#include "../proxy/httpclient.h"
 
 #include "test.h"
 
@@ -195,6 +196,9 @@
     // saf tests
     http_reverse_proxy_add_tests(suite);
     
+    // http tests
+    http_client_add_tests(suite);
+    
     // plugin tests
 #ifdef ENABLE_POSTGRESQL
     register_pg_tests(argc, argv, suite);
--- a/src/server/util/objs.mk	Sun Feb 15 11:16:50 2026 +0100
+++ b/src/server/util/objs.mk	Sun Feb 15 12:24:38 2026 +0100
@@ -48,6 +48,7 @@
 UTILOBJ += hashing.o
 UTILOBJ += pblock.o
 UTILOBJ += uri.o
+UTILOBJ += socket.o
 
 UTILOBJS = $(UTILOBJ:%=$(UTIL_OBJPRE)%)
 UTILSOURCE = $(UTILOBJ:%.o=util/%.c)
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/server/util/socket.c	Sun Feb 15 12:24:38 2026 +0100
@@ -0,0 +1,104 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2026 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "socket.h"
+
+#include <unistd.h>
+#include <sys/fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+int util_server_socket_local(short *port) {
+    int socket_fd = socket(AF_INET, SOCK_STREAM, 0);
+    if(socket_fd < 0) {
+        return -1;
+    }
+    
+    short socket_port = 0;
+    if(port) {
+        socket_port = *port;
+    }
+    
+    struct sockaddr_in addr;
+    addr.sin_family = AF_INET;
+    addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+    addr.sin_port = htons(socket_port);
+    
+    if(bind(socket_fd, (struct sockaddr*)&addr, sizeof(addr))) {
+        close(socket_fd);
+        return -1;
+    }
+    
+    socklen_t len = sizeof(addr);
+    if(getsockname(socket_fd, (struct sockaddr *)&addr, &len) < 0) {
+        close(socket_fd);
+        return -1;
+    }
+    
+    if(port) {
+        *port = ntohs(addr.sin_port);
+    }
+    
+    return socket_fd;
+}
+
+int util_socket_connect_local(short port) {
+    int fd = socket(AF_INET, SOCK_STREAM, 0);
+    if(fd < 0) {
+        return -1;
+    }
+    
+    struct sockaddr_in addr;
+    addr.sin_family = AF_INET;
+    addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+    addr.sin_port = htons(port);
+    
+    if(connect(fd, (struct sockaddr*)&addr, sizeof(addr))) {
+        close(fd);
+        return -1;
+    }
+    
+    return fd;
+}
+
+int util_socket_setnonblock(int fd, int nonblock) {
+    int flags;
+    if ((flags = fcntl(fd, F_GETFL, 0)) == -1) {
+        flags = 0;
+    }
+    if(nonblock) {
+        flags |= O_NONBLOCK;
+    } else {
+        flags &= ~O_NONBLOCK;
+    }
+    if (fcntl(fd, F_SETFL, flags) != 0) {
+        return 1;
+    }
+    return 0;
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/server/util/socket.h	Sun Feb 15 12:24:38 2026 +0100
@@ -0,0 +1,57 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2026 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef UTIL_SOCKET_H
+#define UTIL_SOCKET_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Small socket utility functions for creating server or client sockets
+// on localhost. Useful for testing.
+    
+// creates a socket, binds it to localhost and optionally to the specified port
+// port: if *port is 0, a random port is choosen
+// returns the socket fd
+int util_server_socket_local(short *port);
+
+// creates a socket and connects to localhost:<port>
+// returns the socket fd
+int util_socket_connect_local(short port);
+
+// enables/disables non-blocking mode the for specified socket
+int util_socket_setnonblock(int fd, int nonblock);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* UTIL_SOCKET_H */
+

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